Biology presentation "Type of Sponge", biology, grade 7. Biology presentations presentation for a lesson in biology (grade 7) on the topic

SPONGE TYPE

CHEMISTRY AND BIOLOGY TEACHER

MKOU BUTURLINOVSKAYA SOSH №4

CHERNAYA T.M.,

YEAR 2014

The history of the discovery of sponges

Zoologists still do not know exactly where, in what place of the animal kingdom to place sponges. Sponges received the status of animal organisms only in 1825. ., and before that, together with some other sedentary animals, they were classified as zoophytes - half animals, half plants.

Theory of Ilya Mechnikov
Theory of Ernst Heinrich Haeckel

Ilya Mechnikov

Ernst Haeckel

Characteristic invertebrates

Double Layer Animals:

Three layer animals:

ectoderm
ectoderm

ectoderm, endoderm, Mesoderm
ectoderm,
endoderm,
Mesoderm

(outer layer)

(gives rise to muscle and connective tissues)

Endoderm
Endoderm

Radial and bilateral symmetry of the body

Representatives: flat, round, annelids, arthropods, mollusks and echinoderms

(tissue that forms internal organs) )

Radial symmetry of the body

Representatives: sponges and coelenterates e

Near 3 thousand species;
In the aquatic environment, there are freshwater and marine, attached, usually colonial, live in places with the current or in the ebb and flow zone;
Solitary or colonial, having a calcareous (Lime) or silicon skeleton (Glass and Ordinary), sizes from 1mm (Glass) to 1m (Ordinary);
Predators and filter feeders;
Well-developed passive defense in the form of needles, the release of a frightening odor, poisonous substances to protect against enemies and immobilize animals (bacteria, protozoa)
Absence of true tissues and germ layers

Dimensions vary widely: from a few millimeters to one meter in height and more . A sponge taken out of water resembles a piece of raw liver and smells bad

Habitat .

Sponges are extremely common animals of the water world of our planet. They are found in the icy water of the Arctic and Antarctic, and in the tropics, in salt and fresh water.

But the species diversity of sponges most in salty waters of warm latitudes - tropics and subtropics.

The shape of the body can be extremely variable, more often resembling a glass or a bag. Color varies from bright yellow to dark brown.

The body of sponges is made up of different types of cells.

But they do not form tissues. Each cell functions independently.

outer layer the bodies of sponges form cells resembling the cells of the integumentary epithelium of other multicellular animals. Among the cells of the outer layer, there are those that have a pore. These pores begin a system of tubules penetrating the walls of the body. The openings of these tubules are surrounded by cells capable of contracting and closing them. The tubules conduct water with food particles to the internal cavity.

This cavity is usually lined with special cells with flagella, the base of which is surrounded by a membranous collar (Fig. 58, Such cells form the inner layer .

In many sponges, they are located inside the walls of the body, forming flagellar chambers. The work of the flagella ensures the movement of water through the system of tubules and internally

Between the outer and inner layers of cells is intercellular substance containing different types of cells. Some of them form the internal skeleton of sponges.
Another cell type is amoeboid. These cells, with the help of pseudopods, capture food particles that are digested into their

digestive vacuoles. Moving along the body of the sponge, amoeboid cells distribute nutrients.

1 - paragastric cavity,

3 - choanaocytes

(collar cells of endoderm

Sponge structure

2 - mouth,

4 - ectoderm,

5 - mineral needles

6 - channel.

The main types of structure of the aquifer system of sponges

leukone

ascon

Seacon

Ascon

In a number of calcareous sponges, an increase in the size of the flagellar chambers and a reduction in the system of inlet and outlet canals occurred. Such sponges consist of a tube or a branched system of tubes lined with choanocytes from the inside; while the pores (ostia) open directly into the flagellar chambers. The aquifer system is characteristic of only two genera - Leucosolenia and Clathrina .

Seacon

The formation of the sicon is caused by the growth of the mesochil and the invagination of sections of the paragastric cavity into it, forming radial tubes. Choanocytes line only the flagellar tubes and disappear from other parts of the atrial cavity. The walls of the body of the sponge thicken, and adducting canals form between the surface of the body and the flagellated tubes. The structure of the siconal type is characteristic of only a few species (for example, Scypha and Grantia).

lacon

The most complex type of structure. These are colonial sponges with numerous osculums. There are many skeletal elements in the thick layer of mesogleys. The wall of the body is permeated with a network of canals that connect numerous flagellar chambers.

CONCLUSIONS

The sponge feeds on those food particles that the water brings. it simplest type structures of sponges ascon . But in most sponges, the mesoglea thickens and the flagellar cells line the protrusions, cavities. This type of building is called Seacon , and when these cavities completely go inside the mesoglea and are connected by channels with the paragastric cavity - leukone .

Sponges, moreover, usually form colonies with many mouths on the surface: in the form of crusts, plates of clods, bushes.

Fig 3.3. Development of the lime sponge

(according to Schulze):

1 - embryo in the body of the mother, large cells pushed into the cavity of the blastocoel; 2 - free-swimming larva, large cells protruded again; 3 - invagination of small cells bearing flagella (gastrulation); 4 - attachment and the beginning of metamorphosis of the larva.

In addition to asexual reproduction - budding, sponges also reproduce sexually. Remarkable way of development of the larva. A blastula develops from the egg, consisting of one layer of cells, and at one pole the cells are small and with flagella, at the other they are large without flagella. First, large cells protrude inward (1), then protrude and the larva swims freely (2), then the flagellar cells protrude again, which become the inner layer (3).

The larva settles and turns into a young sponge (4).

Features of the embryonic development of sponges give scientists reason to believe that their primary ectoderm (small flagellar cells) take the place of the endoderm. There is a perversion of the germ layers. On this basis, zoologists give sponges a name - animals turned inside out (Enantiozoa). It is interesting that the larva of most sponges, a parenchymula, almost completely corresponds in structure to the hypothetical phagocytella of I.I. Mechnikov. It has a superficial layer of flagellar cells, under which the cells of the inner loose layer are located. It can be assumed that the phagocytella switched to a sedentary lifestyle and in this way gave rise to the Sponge type. Another feature is the amazing ability of sponges to regenerate. Even being rubbed through a sieve and turned into a gruel consisting of cells or their groups, they are capable of restoring the body. If you rub two sponges through a sieve and mix these masses, then the cells of different animals will gather into two different sponges.

In nature, sponges are essential as biofilters. Settling in water bodies with significant organic pollution, they participate in their biological purification. The practical value of sponges is small. In some southern countries, the trade of toilet sponges with a horny skeleton is developed; freshwater sponge badyagu is used in folk medicine. Sponges have practically no enemies, except for some starfish. Others are frightened off not only by the prickly skeleton, but also by the sharp, specific smell of the substances emitted by them. These substances are toxic to many animals. But on the other hand, sponges in cavities and voids have many lodgers and parasites - small crustaceans, worms, mollusks living under their protection.

**Task 3.1. Write captions for the picture and answer the questions:

Figure 3.4. The structure of the sponge (according to Pfurtsheller).

Some sponges are green in color. Why?________________ _______________________________

How many sponges are in the picture?_______

What cells are characteristic of sponges? _______________________________

What type of nervous system do sponges have?

__________________________________

1. ______________

2. ______________

3. ______________

4. ______________

5. ______________

6. ______________

7. ______________

8. ______________

Task 3.2.

Put in tests + against correct, or - against erroneous statements:

THE APPEARANCE OF MULTICELLULAR ANIMALS. SPONGE.

Test 1. Is it true that with an increase in size, through a large surface, heat transfer is facilitated in homoiothermic organisms?

Test 2. Is it true that with a decrease in size through a large relative surface, the removal of waste products from unicellular organisms is facilitated?

Test 3. The radius of the ball doubled. How will the surface of the sphere change?

The surface will double. ()

The surface will quadruple. ()

The surface will increase six times. ()

The surface will increase eight times. ()

Test 4. The radius of the ball doubled. How will the volume of the sphere change?

The volume will double. ()

The volume will quadruple. ()

The volume will increase six times. ()

The volume will increase eight times. ()

Test 5. What theory of the origin of multicellular animals did E. Haeckel propose?

The theory of gastrea. ()

The phagocytella theory. ()

Test 6. What theory of the origin of multicellular animals was proposed by I.I. Mechnikov?

The theory of gastrea. ()

The phagocytella theory. ()

Test 7. Which organism does not belong to multicellular animals?

Trichoplax. ()

Volvox. ()

Badyaga. ()

Test 8. In the mesoglea of the sponge there are small flagellar chambers, and the paragastric (internal) cavity is expelled by the ectoderm. What is this type of sponge called?

Lacon. ()

Test 9. How do adult sponges move?

They crawl very slowly. ()

They can swim by throwing water from the mouth. ()

Forming gas vacuoles in the mesoglea. ()

Motionless. ()

**Test 10. What kind of sponge, which contains a pair of crustaceans, is customary to give in Japan for a wedding as a symbol of eternal fidelity?

Sea orange. ()

Sea Cup. ()

Basket of Venus. ()

Badyagu. ()

**Test 11. What did village coquettes use instead of rouge?

Badyagu. ()

Holothurian. ()

Red corals. ()

Test 12. What are the holes in sponges called, through which water is brought out?

Mouth, osculum. ()

Mouth opening. ()

**Task 3.3. Olympiad questions (without answers).

Why are cells microscopically small?

Basic theories of the origin of multicellular animals.

Task 3.4. Keywords and chapter concepts.

Find in the text and write down the definition or brief description the terms below. Try to remember them. Write down the systematic position of these animals.

**Blastula

**Gastrula

Intussusception

Mesoglea

Paragastric cavity

Parenchymula

Theory of gastrea

The phagocytella theory

Trichoplax

Choanocytes

Skeleton

Ordinary sponges

The sponge skeleton develops in the mesoglea. It consists of the fibrillar protein collagen or the organic matter of spongin and millions of microscopic needles (spicules) formed by silica or carbonic lime. Needles have a variety of shapes mu and dimensions .

lime sponges

glass sponges

Sponge processes

Food

Breath .

Food

Selection .

Isolation of food debris

Oxygen

Carbon dioxide

Digestive vacuole

Symbiosis sponges

Spongicol shrimp

Live in sponges in pairs

Hermit crab with cork sponge

Dromia crab uses a sponge

Serpenttails (brittle stars)

Sea acorn, Balianus

in a sponge.

Two generations of goats, fathers and children. amphipods.

SPONGES REPRODUCTION

SEXUAL

asexual

budding

GEMMULES

SPONGES REPRODUCTION

Most sponges hermaphrodites . reproduction sexual and asexual. The kidneys that form on the body, as a rule, do not separate from the mother's body, which leads to the appearance of colonies of the most bizarre shape. In the sexual process, the sperm fertilizes the egg; a larva emerges from the egg, swimming in the water for some time, and then attaching itself to the bottom. Most sponges live from a few weeks to two years; horse sponge can live up to 50 years or more.

Sponge breeding

Larva

Spermatozoa enter the water and enter the body

other sponges where eggs are fertilized . .

Asexual reproduction by external budding

Sponge breeding

A special method of internal budding exists in the freshwater sponge badyagi. In summer, badyaga reproduces by ordinary budding and sexually. But by autumn, in the mesoglea of the badyagi, the formation of special spherical clusters - gemmules - by amoeboid cells is observed. A gemmula is a multicellular mass surrounded by a shell of two horny layers, between which there is a layer of air with small silica needles set perpendicular to the surface of the gemmule. In winter, the badyagi's body dies and disintegrates, and the gemmules fall to the bottom and, protected by their shell, remain until the next spring. Then the cell mass contained inside the gemmul crawls out, attaches to the bottom and develops into a new sponge

Sponge regeneration

Sponges have a very well developed ability to tissue regeneration : even if the sponge is cut into pieces, a new sponge will grow from each piece after a while.

Survival sponges

Remarkable is the ability of freshwater sponges to endure adverse conditions of existence. Their gemmules are very well preserved even for several years. With the complete drying of the reservoir, for example, they can most in a different way, including with the help of the wind or attached to the legs of birds, be transported to other places. And if such gemmules fall into the water, they give rise to a new settlement of sponges.

gemmula sponge

. Classification

Kingdom: eukaryotes (nuclear )

Kingdom: Animals

Subkingdom: Multicellular

Type: Sponges

Type taxonomy

More than 95% of all species belong to ordinary sponges.

Sponge Type

The structure of the skeleton serves as the main feature of the classification of sponges.

Class

Lime

glass

Ordinary

have a silicon skeleton
Live in both salt and fresh water
Mostly colonial forms
Needles may be missing
Dimensions - up to 1 meter

They have a calcareous skeleton
Live in shallow seas and oceans
Body diameter not more than 7 cm, inexpressive, often not colored
Needles reach sizes of 7 cm

The needles are made of silicon and reach sizes up to 40 cm.
Easily damaged molds
They live alone or in colonies at great depths.
These sponges are up to 50 cm in size.

CLEAR WATER

DESTROY COAST ROCKS

ARE HABITATS FOR SMALL ANIMALS

USED IN MEDICINE AND PERFUME

SERVE FOOD FOR AQUATIC ANIMALS

USED FOR POLISHING PARTS AND AS FERTILIZER

VALUE OF SPONGES

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CLASS INSECTS (more than 1 million species)

BODY SECTIONS OF INSECTS

MOSAIC VISION

INTERNAL STRUCTURE OF INSECTS

Internal structure insect

In a swimmer, in a bumblebee, in a walrus, in an ant, in a grasshopper, in a bear, lice

Insect development with complete transformation: 1 - eggs, 2 - larva, 3 - pupa, 4 - adult insect. Insect development

Insect development

EGGS OF DIFFERENT INSECTS

LARVIES OF DIFFERENT INSECTS

Insect development with complete transformation: 1 - eggs, 2 - larva, 3 - pupa, 4 - adult insect. Development of an insect with incomplete transformation: 1 - eggs, 2 - larvae, 3 - adult insect.

SIGNIFICANCE OF INSECTS In nature: Links in food chains. Participate in soil formation (soil insects) Participate in the cycle of substances in nature. Pollinate plants (bees, butterflies, etc.) In human life: Positive value: Obtain various products (honey, wax, silk, medicines, beekeeping products, etc.) Pollinate cultivated plants Destroy insect pests (ants, dragonflies, riders , ladybugs, etc.) Aesthetic value (butterflies, beetles, dragonflies, etc.) Use in medicine and cosmetics (bee products)

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Some types of leishmania cause cutaneous leishmaniasis; mosquitoes are the carrier of pathogens; wild rodents or sick people are the source of invasion. Animals are flagellates.

Ciliates GENERAL SIGNS: They have two nuclei, two contractile vacuoles, digestive vacuoles, They have special-purpose organelles - a cellular mouth, pharynx, powder. Movement with eyelashes. They reproduce asexually and sexually.

Infusoria - slipper Ciliates Colony of ciliates Corhesium Ciliates - trumpeter

Ciliates The shape of the body is constant due to the elastic and durable shell - the pellicle. Actively move with the help of cilia. Another important feature is the presence of two nuclei: a large polyploid vegetative nucleus - the macronucleus and a small diploid generative nucleus - the micronucleus. In the ectoplasm of many ciliates there are special protective devices - trichocysts. When the animal is irritated, they shoot a long elastic thread that paralyzes the prey. 7.5 thousand species

The value of protozoa in nature and human life In nature, they are a link in food chains. They play the role of orderlies, clearing water bodies of bacteria and rotting substances. Water purity indicators. The shells formed sedimentary rocks. Participate in the cycle of substances and in the formation of soil. According to the remains of marine foraminifers, geologists determine deposits of oil and gas. Cause disease in humans and animals.

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P chela

Honey Honey contains glucose and fructose Honey compares favorably with sugar.

Honeycombs Beeswax. Produced by bees Wax rich in vitamin

Necessary for the epithelium of the skin, bronchial mucosa, throat and nose, stomach and intestines, for visual acuity.

Has an antimicrobial, nourishing and regenerating effect

Bee venom Healing action: anti-inflammatory, analgesic, improves immunity

bee venom antimicrobial; dilates blood vessels; lowers blood pressure;

Bee venom reduces blood clotting; lowers blood cholesterol.

Collection of nectar

Propolis Gather propolis by scraping it from the frames and walls. 50-150 g of propolis are collected from the hive in a season.

Propolis Beekeepers melt propolis in a water bath; while retaining its properties

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ACTIVE GOAL-SETTING IN THE MODERN LESSON Zarubina Ekaterina Yuryevna GBOU secondary school No. 143

Modern lesson Teacher's activity Student's activity - Organizes problem and search situations Draw conclusions -Activates students' activity

Biology Grade 5 A living organism and its properties Objectives: To introduce students to the textbook To form the ability to list the distinctive properties of a living thing To begin the formation of the ability to understand the meaning of biological terms

Goal Setting Questions You have a textbook in your hands. What is needed for successful work with this tutorial? You know that on Earth there are living objects and non-living ones. What signs allow us to make such a division? We have named the distinctive features of living organisms. Are all concepts familiar to you?

Planned lesson outcomes Subject EAL: The student will learn to enumerate the properties of a living thing The student will have the opportunity to learn to understand the meaning of such biological terms as: metabolism, growth, individual development, reproduction, irritability, fitness

Personal UUD Begin to realize the unity and integrity of the surrounding world Gradually build your own holistic worldview

Meta-subject UUD Cognitive The student will learn to navigate in the textbook The student will learn to find and use necessary information The student will have the opportunity to learn to analyze, compare and generalize facts and phenomena

Communicative: The student will learn to listen and understand the speech of other people The student will have the opportunity to learn how to independently organize educational interaction when working in pairs

Summary of the lesson What question was answered in the lesson? What did you find out? How did you work? What worked and what didn't?

Biology Grade 5 B Acting Purpose: Formation of ideas about bacteria as living organisms, the role and importance of bacteria in nature and human life

Expected results of the lesson Subject EAL: The student will learn to highlight the essential features of living organisms The student will learn to find the parts and organelles of the cell on the tables The student will have the opportunity to learn to identify adaptations to the environment The student will have the opportunity to begin to master the methods of biology

Personal UUD: The student will learn to be responsible for learning The student will develop intellectual skills

Meta-subject UUD Cognitive The student will learn to work with sources of information The student will have the opportunity to learn how to work with sources of biological information Communicative The student will learn to use speech correctly The student will have the opportunity to learn how to adequately use speech means for discussion

Regulatory The student will learn to compare different points of view The student will be able to learn to evaluate different points of view

Biology grade 6 Seed germination Purpose: Determine the conditions necessary for seed germination

Questions for Goal Statement How are nutrients used in the plant? Why do seeds need nutrients? What plant seeds do you have in your kitchen? Why do they just lie there and not germinate? So what are we going to talk about today?

Expected Lesson Outcomes Subject-specific ELC The student will be able to list the conditions necessary for seeds to germinate The student will be able to learn to predict if seeds will germinate under given conditions

Meta-subject UUD Cognitive The student will learn to navigate in his knowledge system The student will learn to extract information presented in different forms The student will have the opportunity to learn to recognize the need for new knowledge The student will have the opportunity to learn how to obtain new knowledge, find answers to questions

Communicative The student will learn to verbally formulate his thoughts The student will learn to listen and understand others The student will have the opportunity to learn how to work in a group, perform different roles lesson

Thank you for your attention

SYSTEMATICS- biological science of diversity, classification of organisms and related relationships between them.

Systematic scientists describe all existing and extinct species and combine them into groups (classify).

View - unit of biological classification. Closely related species that have many common features are grouped into genera, childbirth- in families families- in detachments or orders etc.

The largest systematic group is kingdom.

The very first scientist who tried to systematize information about plants and animals was Aristotle b. Animals were classified by him according to their habitat: aquatic, land-dwelling and air-dwelling.

Disciple of Aristotle Theophrastus devoted his whole life to the study of plants and described many of their species. His works served for centuries to identify plants.

The entire history of mankind is connected with the accumulation of knowledge about plants, animals and fungi. However, for a long time there was no single approach to the names of species of living organisms. This made it difficult to study and describe them.

The Swedish scientist managed to solve the problem Carl Linnaeus .

He proposed to assign to all types of organisms double Latin names . First word- noun - shows belonging to the genus . second word- adjective - actually specific name, which makes it possible to distinguish this species from other species of the same genus. The introduction of double Latin names allowed scientists all over the world to understand each other and contributed to the development of biological science.

Superkingdom of Eukaryotes

Kingdom Animals

Subkingdom Multicellular

Type Chordates

Subtype Vertebrates

Class Amphibians

Rod Frog

View Grass frog Lake frog

Homework:§8, rep. to?

Annotation to the material

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The presentation on the topic "Waterfowl" has enough interesting material and pictures to introduce students to the group of birds that can stay on the water and get their own food here. You can download the development, which tells about waterfowl marsh, river and near-water birds, for a biology lesson in grade 7. The material is colorful and...

Variety of birds - presentation

A presentation on the topic "Diversity of birds" is a colorful visual aid for a biology lesson in grade 7. It talks about many environmental groups birds that inhabit forests, fields, steppes, reservoirs and other natural communities of the earth. Such a large variety of bird groups in connection with living conditions is considered on 16 slides, each of ...

Presentation on the topic " Predator birds” talks about those birds that we call day and night predators. The development can be downloaded for a biology lesson in grade 7. The manual is made on 33 slides. The material will be enough for the whole lesson, so no other aids are needed for the lesson. The presentation "Birds of Prey" was made in the program ...

Class Amphibians or amphibians

A presentation on the topic “Class Amphibians or Amphibians” will tell about a group of animals that have adapted to live both in water bodies and on land. As an adult, they spend most of their life on the ground, but for their reproduction, growth and development of the larva, an aquatic environment is required. That is why they got such a name. Material...

Animal excretory organs - presentation

A presentation on the topic “Animal Excretion Organs” will allow you to repeat the evolution of the excretory system in animals and understand the mechanism of urine formation in humans at a biology lesson in grade 7 or 8. Despite the fact that the development is presented without an outline, its first slides define the goals and objectives of the lesson, which must be achieved with ...

Presentation Evolution of excretory organs

In the presentation on the topic "Evolution of the excretory organs", which was made in biology by a 7th grade student, the process of complicating the construction of the excretory system in animals, ranging from flatworms to higher animals, is considered. This is a project in which material is collected and systematized on the topic: Excretory system annelids: diagram in longitudinal and transverse section...

Presentation Mushrooms

The presentation on the topic “Mushrooms” reveals the structural features of the representatives of this kingdom, their role in the life of the natural community in which they grow, and their significance for humans. After examining a lot of pictures, since the electronic manual is made on 21 slides, students will learn to distinguish edible mushrooms from those that are poisonous and can be harmful to health if ...

The internal structure of birds - presentation

The presentation on the topic "The internal structure of birds" reveals the distinctive features of the structure of the skeleton, digestive, respiratory and excretory systems in connection with fitness for flight. Animals and amphibians cannot fly. With regard to birds, nature acted in its own way, rewarding their body with special organs that help them rise into the sky and at the same time maintain their own ...

Presentation Diversity of amphibians

The presentation "Diversity of amphibians" can be used in a biology lesson or in an extracurricular activity when summarizing knowledge on the topic. A game is presented in development that has 5 categories: Lifestyle Features of the structure of the body Habitat Use Reproduction For each question, players receive from 1 to 5 points....

Presentation Class amphibians, detachment tailless

A biology presentation for grade 7 will introduce students to those animals that belong to the amphibian class and represent the tailless order. That is why they are called so in abbreviated form - tailless amphibians. Schoolchildren will learn what features this detachment has, in which there are about 3,000 species of animals. While studying material on...

Circulatory system. Blood - presentation

Presentation on the topic “Circulatory system. Blood ”will introduce students of grade 7 in a biology lesson to the evolution these organs have undergone in the process of development from protozoa to vertebrates. Based on the development materials, it is possible to explain what kind of blood is in different animals, how the circles of blood circulation work. Presentation slides present structured material about...

Presentation Complication of the structure of animals, diversity of species as a result of the evolution of development

A presentation in biology for grade 7 on the topic “Complication of the structure of animals, diversity of species as a result of evolution” will talk about such significant achievements of evolution as: Adaptation to the environment in which one has to live A huge number of species The structure of living beings has become more complex Two results of evolution are considered in detail : Adaptability...

Animal breeding methods - presentation

Presentation on the topic “Methods of animal reproduction. Fertilization ”was made for a biology lesson in grade 7. It can be downloaded to explain new material, since the slides of the manual are filled with rich textual material, they have many schematic pictures. In the development there are tasks for students that will be performed in the course of explaining the material. To explore the topic...

Presentation Integuments of the body

A presentation on the topic “Integuments of the body” can be offered for use in a biology lesson in grade 7 or 8, depending on educational program used in the school. The material offered in the electronic manual will provide an opportunity to tell students about the similarities and distinctive features of the skin of various animals, to trace how its structure was improved....

Bird eggs: structure and shape - presentation

A presentation on the topic "The structure of a bird's egg" was made for a biology lesson in grade 7. Its content will allow the teacher to talk about the fact that in addition to protein, shell and yolk, other components of the egg can be distinguished, so words such as latebra, blastoderm, yolk membrane and others will fall into the dictionary in the lesson. On the diagram...

Presentation Amphibians

The presentation on the topic “Class Amphibians”, which is proposed to be downloaded for a biology lesson in grade 7, will allow you to study new material in an unconventional form, which always arouses great interest among the children. The lesson will be built according to the following plan: Auction of terms (chord, spine, ventricle, coelacanth, eggs, fish, lateral line) Reports of our correspondents...

KVN in biology with a presentation

KVN in biology with a presentation can be held as extracurricular activity in biology, dedicated to the Day birds or after studying the topic "Birds" in the lesson. Electronic development presented together with a summary, which can be downloaded for free at the link. In addition, the archive contains sound files with recordings of the voices of birds: stork, sparrow, raven, capercaillie, woodpecker, ...

Sense organs, regulation of body activity - presentation

Biology presentation for grade 7 on the topic “Sense organs. The regulation of the body's activities is additional material for a lesson in which it is necessary to explain to students how, thanks to the eyes, ears, skin, antennae, nerve cells, various living beings are interconnected with the world that surrounds them. On the slides of the electronic manual, students will trace ...

Presentation Reptiles

The presentation on the topic "Reptiles", which can be downloaded for a biology lesson in grade 7, provides visual material on the basis of which students will get acquainted with another large class of animals and its representatives. Each creature related to reptiles has its own characteristics, but together they are grouped according to common features, which...

Superorder typical birds - presentation, grade 7 biology

The presentation on the topic "Typical Birds" gives an idea of the feathered creatures that belong to this group. According to the systematics carried out by scientists, this large group represents the superorder typical birds and the superorder penguins. Running birds are not singled out separately in this development, since they are also assigned to the typical superorder. The electronic manual provides a general ...

Presentation Ancient reptiles

The presentation on the topic “Ancient reptiles” tells about those representatives of the class that once inhabited the Earth, but due to changes in natural conditions, completely disappeared and are now considered extinct. These ancient animals include not only dinosaurs, about which schoolchildren know a lot, but also other representatives that students in grade 7 learn about ...

Squads of birds - presentation

The presentation on the topic "Squads of birds" can be used in the 7th grade in a biology lesson. Its author is a teacher who knows the subject well. It offers a manual for consolidating material on a topic or for self-study of material from a textbook with a series of tasks. You can download the presentation for a biology lesson, where ...

A presentation on the topic “Reptiles or Reptiles” for grade 7 in biology will reveal the features of the external structure and lifestyle of this group of animals, which are common in almost all corners of the Earth. You can download the electronic manual for a biology lesson without restrictions on the use of teaching materials. The material of the interactive manual is interesting, corresponds to the program. The slides are full of pictures...

The presentation on the topic "Lizards" will tell students about the largest suborder of representatives belonging to the class of reptiles or reptiles. These animals belong to the squamous order and number approximately 400 various kinds, which are grouped into 40 families. You can download a presentation on the topic "Lizards" for a biology lesson in grade 7. The content of the electronic manual, ...

Chameleon - presentation

The presentation on the topic "Chameleon", which can be downloaded for a biology lesson in grade 7, will talk about those lizards that have adapted to live in trees and can change color depending on where they live. The presentation discusses distinctive features chameleons, which give them the opportunity for animals to adapt to the tree image ...

The presentation on the topic “Snakes”, which we offer to download from this page for free for a biology lesson in grade 7, will allow the teacher to expand students' understanding of the animals of this suborder, which are part of a large class of reptiles. A multimedia manual has been completed on 19 slides, which are filled with tasks for students, illustrative and test materials ...

Presentation Reproduction and development of birds

The presentation on the topic “Bird Reproduction and Development”, which can be downloaded in biology in grade 7, presents the material on 32 slides. To disclose the topic, the author proposes to study the material according to the following plan using the manual: Reproductive organs in male and female Structure, various shapes and colors, egg development Development of the embryo, necessary ...

A presentation on the topic "Crocodiles", which can be downloaded for a biology lesson in grade 7 when studying the diversity of reptiles, is made on 17 slides. The material presented in the manual is amazing in its content, beautifully illustrated, so the development can be recommended for study by those students who are interested in the natural world, despite the fact that they can learn...

Presentation Poultry

The presentation on the topic “Poultry”, which can be downloaded for free for a biology lesson in grade 7, will talk about what types of birds are raised by humans for industrial use. On the slides of the development, which is presented on 20 slides, there is a lot of textual material, illustrative, there are riddles about poultry, poetry. The material is divided into...

Birds - presentation

The presentation on the topic "Birds" was made for a biology lesson, which will be held in grade 7. The material of the interactive manual is fully consistent program requirements, since the work was done by a biology teacher. You can download a free presentation on the topic "Birds" for any teaching materials. The content of the presentation, which is made on 14 slides, will give students a general idea of \u200b\u200bbirds, how ...

The meaning of birds and their protection - presentation

The presentation talks about the importance of birds and the need for their protection by man. You can use the electronic manual, made on 19 slides, in a biology lesson in grade 7. This topic is recommended to be considered together with the study of the material on the origin of birds, since the topics can be combined with each other. On the slides of the interactive study guide...

Presentation bird rook

A biology presentation about a rook bird can be used in a lesson in grade 7. Enough material has been collected in the development to make it interesting to tell students about this feathered creature that lives in gardens and parks, living next to a person, but does not always attract his eye, since he does not have bright plumage. Bird...

The presentation on the topic "Turtles" presents the most interesting material about the representatives of this detachment, which belong to the class of reptiles. The world of turtles is peculiar and interesting. They are completely different from other reptiles. Although the animals are similar to each other, scientists divided them into 12 families and 2 suborders, which will be discussed in ...

Presentation External structure of birds

A presentation on the topic “The external structure of birds” for a biology lesson in grade 7 will give students an idea of how birds differ externally from other animals belonging to the vertebrate type. On the basis of slides, it is possible to acquaint schoolchildren with the general characteristics of birds, the features of the external structure, which allowed them to settle throughout the entire Earth ....

Presentation Habitat and external structure of birds

The presentation talks about how the habitat affects the external structure of birds. You can download an electronic manual on this topic for a biology lesson in grade 7. The slide material will enable students to get answers to the questions, the study of which is provided for by the program: how the structural features of birds are related to flight and habitat. multimedia product...

Musculoskeletal system of birds - presentation

The presentation on the topic "The musculoskeletal system of birds" will introduce students to the structure of the skeleton of birds and muscles. Having studied the structural features of the skeleton and highlighting those features that are characteristic of flight, it will be easy for students to complete laboratory work. The development can be downloaded for a biology lesson in grade 7. The material of the manual is presented not only with information for study ...

Respiratory organs and gas exchange - presentation

A presentation on the topic “Respiratory Organs and Gas Exchange” will allow students in the 7th grade to understand the structural features of the respiratory organs and the essence of the process itself in connection with those features that are characteristic of the body in a biology lesson. Respiratory system birds has a complex structure. To understand the material, students are invited to compare these systems with ...

Presentation Variety of reptiles

The Biology Presentation on the theme "Diversity of Reptiles" will give students the opportunity to see the many-sided world of reptiles, which are represented by animals living in various environments. The development material is made on 44 slides. There are many pictures and descriptions, there are diagrams and tables. After viewing the presentation, students in grade 7 will have a certain concept of the diversity of the world of reptiles....

Presentation Vertebrate subphylum. Fish are aquatic vertebrates

A presentation in biology reveals the structural features of representatives of the animal world belonging to the vertebrate subtype using the example of fish - aquatic vertebrates. On the basis of this material, students in grade 7 will form an idea of what kind of structure the representatives of the animal world have, which scientists attributed to the vertebrate subtype. The visual material is...

Periodization and lifespan of animals - presentation

A biology presentation on the topic “Periodization and Lifespan of Animals” will tell grade 7 students about what periods stand out in the development of each organism and how many years various living creatures can live. Lots in development interesting information. The author has collected a whole collection interesting facts and combined them with the program material, completing the work...

Charles Darwin On the causes of the evolution of the animal world - presentation

Presentation for a biology lesson on the topic “Charles Darwin. On the Causes of the Evolution of the Animal World” will allow students of the 7th grade to discover the concept of heredity and variability, natural selection and the struggle for existence as the main driving forces of evolution. The study of biology material is closely intertwined with other sciences, so the author of the development leads to reveal the topic of the lesson ...

Presentation Squads of insects

The presentation will introduce students in grade 7 to the main orders of insects and their distinguishing features. The students will recognize the representatives of each group. The dictionary of children will be replenished with new names that will be active in the future. There are many illustrations on the presentation slides that give an idea of the animals being studied. The content of the topic of the lesson is revealed on 25 slides, which present ...

Class Insects - presentation

The presentation on the topic “Class Insects” was made by a 7th grade student in biology. His project is about a group of animals that are the most advanced of all arthropods. You can download a presentation on biology on the topic "Insects" to study the material in the lesson or as a model for project work by seventh graders. Insect stuff...

Reproduction and development of mammals - presentation

A presentation on the topic “Reproduction and Development of Mammals” for a biology lesson in grade 7 will allow students to identify, using the material presented on the slides, the features of the life cycle of animals belonging to this class. Development is not only textual material. Information is presented in the form of tables, diagrams, which allows students to concentrate on the topic and open ...

Dividing birds into groups - presentation

The presentation on the topic "Dividing birds into groups" will allow students in grade 7 to figure out what signs can be used to combine birds into groups. The external structure of birds is different, as birds live in different natural conditions. In accordance with the place of residence, ecological groups of birds are also distinguished: Forests of Swamps and ...

Ecological groups of birds - presentation

A presentation on the topic “Ecological groups of birds” for a biology lesson in grade 7 will allow students to study in detail and, together with the teacher, analyze the conditions for adaptation to various habitats in nature of representatives of the Bird class. Depending on the specific place of residence of birds, ecological groups are distinguished. Each individual group has its own common features ...

Systematic groups of birds - presentation

The presentation on the topic "Systematic groups of birds" can be used in a biology lesson in grade 7 when meeting a new class of animals or when studying the classification of birds or when getting acquainted with the diversity of the world of birds. The following systematic groups are highlighted on the development slides: Penguins Ostrich (ratiteless) Petrels Pelicans (copepods) Anseriformes (ducks and...

Presentation Type Echinoderms

A presentation on the topic "Echinoderm type" in biology in grade 7 was made by a teacher to introduce students to animals that belong to the most ancient creatures with bilateral symmetry. Having gone through the stages of evolution, they appearance has changed. They became five-rayed, having lost their axis of symmetry, but this property remained in the larvae. Download free presentation on...

Presentation Digestive organs, metabolism and energy conversion

The presentation introduces students to the digestive organs of animals, how representatives of different types and classes of metabolism and energy conversion occur. This development can be downloaded for a biology lesson in grade 7 according to the textbook by Pasechnik V.V. The material of the manual is presented on nine slides that are filled with tests on the topic, tables and ...

Presentation Prolongation of the genus, reproductive organs

Presentation on the topic “Extension of the genus. Reproductive organs ”was made for a biology lesson in grade 7. It can be downloaded for free as a visual aid for studying the topic according to the textbook by Pasechnik V.V. The material is downloaded from the link without registration and SMS. The electronic manual will help students to consider the process of reproduction of offspring in animals, as one ...

Development of animals with and without transformation - presentation

The presentation on the topic "The development of animals with and without transformation" tells about how living individuals of various classes develop, what stages of development animals go through. The development contains enough material about those representatives whose development occurs with transformation, and about those living beings whose development proceeds without transformation, then ...

Proof of animal evolution - presentation

A presentation on the topic "Proof of Animal Evolution" was made for a biology lesson in grade 7. The material of the electronic manual is located on 18 slides. These are not only thematic tests, but also clear, understandable schemes, photographs of scientists who have studied evolution, and illustrative material on the topic. On the presentation slides, the following information is presented in short logical blocks, which is ...

The presentation on the topic "Protozoa" will tell about those unicellular animals that belong to the eukaryotic group. You can download the manual for free for a biology lesson in grade 7. The visual aid provides enough material on the topic "Protozoa" to conduct a lesson in biology: Who are the protozoa? Features of the structure of unicellular organisms ...

Presentation The evolution of the nervous system in animals

The presentation on the topic "Evolution of the nervous system" gives students an idea about the development of this system in various groups of animals, about its complication in the process of their development, about its role in life. You can download the development for free at the link for a biology lesson in grade 7. The presentation material is presented in the form of tables and diagrams, figures and...

Nervous system, reflex, instinct - presentation

Biology presentation on the topic “Nervous system. Reflex. Instinct ”will allow you to study in the lesson the features of the structure and development of the nervous system of animals belonging to various types and classes, as well as to understand the reflex principle of its work. You can download an electronic manual for grade 7 along with a lesson summary, which defines goals, objectives, schedules ...

A presentation on the topic "Dinosaurs" will introduce students in grade 7 to representatives of the animal world that lived on Earth many millennia ago, but disappeared due to a changed climate and a number of other reasons. You can download the development about dinosaurs both for a biology lesson and for self-acquaintance of students with these creatures. The material might be interesting...

The evolution of the sense organs in animals - presentation

The presentation introduces the evolution of the nervous system and sensory organs in various animals. Her material can be used in a biology lesson in grade 7. The manual describes in sufficient detail, using illustrative material as an example, the structure of the nervous system, its significance and the significance of the sense organs for various living organisms. Looking at the slides...

Gastropods - presentation

The presentation offers a fascinating virtual introduction to unusual creatures called gastropods. In a biology lesson, studying the topic, grade 7 students will consider the structural features of the body, the living conditions of representatives of this large group. You can also download the guide for elementary school, since the material will be of interest to students in grades 2-3, who ...

Atavisms and rudiments - presentation

The presentation can be used in the study of atavisms and rudiments that indicate our close relationship with representatives of the animal world. The manual can be downloaded both for zoology lessons in grade 7 and for anatomy classes in grade 10, which also this topic may be considered. First, two concepts are defined, after ...

Detachment Orthoptera - presentation

The presentation introduces schoolchildren to representatives of the order Orthoptera, which belong to a large class of insects. We meet these small animals everywhere in nature. At the biology lesson, 7th grade students will be able not only to see them, but also to learn the structure of the body, the characteristics of life, and the habitat of individuals. To make the lesson interesting, it is proposed to download an electronic resource, ...

Gorilla Presentation

The presentation will be very interesting for both children and teachers, because it tells about the diversity of gorillas and the peculiarities of their life and behavior. From the first page, when you see a photo of this huge primate, you want to learn more about the monkeys that were once considered our ancestors. A lot of interesting things are collected on 34 slides of development, which ...

Squad Chicken - presentation

The presentation talks about birds belonging to the order Chicken. Of course, in one biology lesson, 7th grade students are unlikely to learn about all the representatives of this group, since there are 283 species in total, but they will get acquainted with many wild and domestic chickens. The manual will decorate a biology lesson, so do not pass it by. Better download...

Sponges - presentation

The presentation on the topic "Sponges" tells about multicellular animals that live mainly in the expanses of the seas. The topic is covered on 19 slides. Download the manual is offered for display in zoology in grades 5 - 7. Acquaintance with a new class of animals of the sub-kingdom Multicellular begins with the study of general characteristics. Then a classification of the type of sponges is given, it is told about ...

Scaled - presentation

The presentation tells about the oldest creatures of the planet belonging to the order Scaly Reptiles class. The information is interesting. It is planned to be shown at biology lessons, so all teachers who prepare the topic in grade 7 can download the resource. The story begins with an excursion into antiquity. With the help of the map, it will be possible to assess the scale of the territories that were ...

Type Roundworms - presentation

A presentation for a zoology lesson presents a type of roundworm. Grade 7 students will have to get acquainted with the internal and external structure of unusual creatures related to animals, consider the structure of their body. You can also download the manual for independent study outside the home, for repeating the topic in grade 8. Inconspicuous at first glance, roundworms turned out to be ...

Scorpions - presentation

The presentation is a ready-made manual about scorpions, which can be shown to schoolchildren in a biology lesson when studying arthropods. This development is entirely devoted to the story of creatures that inhabited predominantly warm sandy and rocky regions, but also found in wet areas. They have unusual shape bodies, an even more mysterious way of life. Yes, and on...

Maybug - presentation

The presentation on zoology is completely devoted to the story of the cockchafer. A small insect is known to everyone, but despite this, there is something to learn about it. And the proof of this is the finished development, which is proposed to be downloaded for grade 7. The material in the manual for the biology lesson is presented clearly, in accordance with the plan. Pictures complete the theme...

Presentation Single pass

A presentation for grade 7 introduces students to animals belonging to the order One-way. This group is otherwise called pervozveri. They will be discussed on the pages of the manual, which can be downloaded for a biology lesson in grade 7. Before us are the most primitive of those mammals that can already be called modern. Among the prominent representatives...

Pincers - presentation

The presentation introduces schoolchildren to such complex creatures as ticks. No one dares to call a meeting with these arthropods pleasant. However, it is better to know your enemy in person in order to avoid danger, therefore it is proposed to download a manual for a biology lesson in order to tell grade 7 students about a dangerous bloodsucker. The finished resource is also suitable for display on ...

Kangaroo presentation

The presentation tells about the Australian marsupial animal - the kangaroo. The material is easy to understand, interesting, pleasant to watch. You can download the manual both for biology lessons in grade 7, and for showing it to the outside world in elementary school. Yes, and at home, children can be happy to read small texts to expand their horizons ...

Presentation Penguins

The presentation invites you to take a trip to the world of ice and cold and meet penguins, amazing birds with wings but unable to fly. The manual is made on 17 slides. The material is interesting, easy to understand, so you can download the resource both for showing in elementary school and for getting to know representatives of the penguin detachment on ...

Type Coelenterates - presentation

The presentation introduces the diversity of the world of animals belonging to the type of intestinal. This guide has been designed to introduce you to new topic in a zoology lesson in the 7th grade. You can download the resource without restrictions on the teaching materials for any biology textbook. On 20 slides, it is proposed to consider material that will fully reveal the topic. Students will be able to see...

Squad Cetaceans - presentation

The presentation offers textual and illustrative material for getting to know the order Cetaceans. Sea animals always attract the attention of children. At the biology lesson in the 7th grade, a detailed acquaintance with the representatives of this group is offered. You can download a ready-made manual and talk about amazing animals that have a similar structure. The author of the work is a student. She picked interesting...

Paleontology - presentation

Presentation can be shown in grades 5-7 when studying the topic "Paleontology" in biology lessons. Using a colorful manual, the teacher will be able to slightly open the mysterious door to an equally interesting science that studies the most ancient layers of the formation of life on the planet. At the lesson, schoolchildren will have to find out when and in what sequence the geological eras went, ...

The presentation will introduce its viewer to owls. These birds are rarely seen by humans, as they are nocturnal. The more interesting it will be to watch the manual and learn new things about birds, if you download the manual for a biology lesson in grade 7, made by the teacher. The pages are collected amazing facts about birds. Did you know,...

Evidence of the evolution of the animal world - presentation

The presentation is filled with material to get acquainted with the evidence of the evolution of the animal world. Development reveals the theme completely. The teacher uses for this not only specific facts, but also figures, relies on the names of scientists who have studied this process. All this will allow students in grade 7 to learn new material great if you download a ready-made resource for a biology lesson ....

Squad Rodents - presentation

The presentation introduces animals called rodents. This is the most numerous detachment in nature in terms of the number of different species and subspecies. In the 7th grade, in the biology lesson, the topic is studied by schoolchildren with pleasure. Children know many representatives of the squad, so when they see the picture, they will actively participate in the reasoning. We suggest downloading an electronic manual to fill ...

Squad Lagomorphs - presentation

The presentation tells about a large detachment of animals - Lagomorphs. These cute creatures occupy a special place in nature. At the biology lesson, 7th grade students will get acquainted with the general characteristics of the group and its individual representatives. A small manual will help in organizing the work, which can be downloaded to any teacher for free. Do not worry that the author of the development ...

Bat squad - presentation

The presentation was made as a project for a zoology lesson by a student Kirill Baranov, who spoke in detail about the representatives of the Chiroptera order. His work can also be downloaded for a biology lesson in grades 6-7, where you need to reveal this interesting topic and introduce unusual creatures that can fly. The group of chiropterans got ...

Marsupials - presentation

The presentation tells about an unusual detachment of animals that have a brood pouch, for which they were called marsupial mammals. The topic is studied in the section of zoology in grade 7. To conduct an interesting lesson that children will remember and give them not only knowledge, but also positive emotions, it is proposed to download this manual. A lot of interesting...

Orders of mammals - presentation

The biology presentation describes all the orders that belong to the class of mammals. In the lesson, students in grade 7 will study the features of the units presented. Children will learn to understand what the representatives of one group have in common, how they, being in the same family, differ from each other. An acquaintance with the world of animals begins with unusual representatives - a detachment of foot-and-mouth disease....

Order Primates - presentation

The presentation tells about the way of life of the representatives of the order Primates. Grade 7 students in a biology lesson will get acquainted with the life of the most unusual animals, since they are the most reminiscent of a person, and therefore are considered his ancestors. In this group, there are a lot of diverse animals, differing both in size and habitat. Download guide...

Pinnipeds - presentation

The presentation tells about a large detachment of animals living in the water - pinnipeds. They are not quite ordinary and unlike those mammals that live on earth. All pinnipeds live in water bodies, and mainly in the seas and oceans. They feed their cubs with milk, but they are not at all afraid of the cold and do not move with the help of ...

Squad Passerines - presentation

The presentation introduces children to interesting information about the birds that make up the order Passeriformes. A large manual, made on 58 slides, will successfully fit into a biology lesson when studying the corresponding topic. The development increases the horizons of schoolchildren, forms visual perception in 7th grade students. In the biology lesson, for which it is recommended to download the resource, children will compare individual birds ...

Squad Proboscis - presentation

The presentation tells about proboscis mammals, which have a unique feature - a trunk, for which they got their capacious name. Download manual is recommended for both thematic lessons biology in the 6th - 7th grade, and for home study of the material by schoolchildren. The topic is revealed in 16 slides: what is a trunk; main features...

Artiodactyls and equids - presentation

The presentation introduces two large orders of animals - artiodactyls and equids. These mammals have many common features, so the study of the topic can be organized in one biology lesson. Grade 7 students will definitely like the material, because we suggest downloading a colorful presentation made on 11 slides to accompany the story. It gives a general...

Animal migrations - presentation

The presentation talks about such a phenomenon as animal migration. The material is useful for teaching ecology or biology lessons. You can download it for those who are considering the topic in grade 7. On the pages of multimedia development, the concept of migration, habitats, patterns of animal distribution is given, and the main types of migration phenomena are analyzed. Are given concrete examples, how...

Annual life cycle and seasonal phenomena in the life of birds - presentation

The presentation talks about what constitutes an annual life cycle birds. The work also considers seasonal phenomena in the life of birds. The topic is quite simply stated using diagrams, diagrams, theses. You can download the material for a biology lesson in grades 7-8. The story begins in spring. This time is marked by the arrival...

Birds of open spaces - presentation

The presentation introduces schoolchildren to the world of birds that prefer to live in open spaces. They love freedom and cannot live either in the forest or in the swamp. They need light. They got used to their living conditions and learned to hatch chicks here and get food. This is an interesting manual, focused on a biology lesson in grade 7, ...

The evolution of the musculoskeletal system of animals - presentation

The presentation examines the process of evolution of the musculoskeletal system in animals over a long period of development of the world. The paper presents material that will help consolidate knowledge and master practical reasoning skills. You can use the manual both in the course of explaining the topic in a biology lesson in grade 7, and when it is consolidated. All assignments are varied...

Ostriches - presentation

A presentation about ostriches was made by a 7th grade student. In her work, she talked about unusual birds, which attract the attention of not only children, but also ornithologists. In the biology project, the girl revealed a number of important issues: the general characteristics of ostriches; emu and African ostrich; How are chicks born? ...

Diversity of insects - presentation

The presentation was made to conduct a generalizing lesson on the topic "Diversity of insects". The material is recommended for use together with the biology textbook edited by Pasechnik. Download the electronic manual is offered with a summary. The lesson is recommended to be held in the form of a game-competition. Pupils will have to prove themselves in the performance of various tasks. The following rounds are defined: Warm-up Biological dictation...

Presentation Bees and ants are social insects

The presentation talks about bees and ants, which in biology are called social insects. Students briefly got acquainted with this topic in the first grade, but it is proposed to consider it deeper in the 7th grade. The lesson will require a lot of visual material to interest students in the subject of study, so it is best to download a ready-made resource along with an abstract and ...

Types of insect development - presentation

The presentation will help to understand how the development of insects occurs. There is enough material on the topic in the work. Students will see in pictures and diagrams how a caterpillar turns into a butterfly, how an insect hatches from eggs. The resource is offered to be downloaded for display at a biology lesson in grades 6-7. The development was completed on 30 slides....

The internal structure of insects - presentation

A presentation on the topic "The internal structure of insects" was prepared by the teacher for display in a biology lesson. The manual will help eighth graders to understand and remember the basic concepts of the topic being studied. Thematic pictures and fragments of text are shown on the big screen. Leading questions force 8th grade students to think and draw conclusions on their own. The work was compiled using elements of health-saving technologies....

The external structure of fish - presentation Grade 7

The presentation tells about the features of the external structure of representatives of the fish class, which are among the oldest animals on our planet. Students are offered vivid illustrations and useful theoretical material for consideration, and to help the biology teacher, they are also invited to download a ready-made summary of the lesson in grade 7. Fish have features in the structure of the body, ...

Lungfish - presentation

The presentation introduces a very unusual group of fish called lungfish. In addition to the usual gills, they have a lung. These amazing creatures live in the seas and oceans. At the lesson of biology in the 7th grade, the structure of the body of these animals and the features of their behavior, lifestyle, and human use will be considered. Studying the subject...

Cross-finned fish - presentation

The main characters of the presentation were lobe-finned fish. This group of marine animals is not numerous, since almost all of its representatives have become extinct. However, interest in the study of crossopterans does not decrease from this. At the biology lesson, schoolchildren will get acquainted with the structure of the body, the characteristics of the life of the coelacanth that lives near the Comoros. Sea miracle is very difficult to meet. Fish live...

Aquatic mammals - presentation

The presentation presents the world of aquatic animals that live in the seas and oceans. For them, water is their usual habitat, although there are individuals that come out onto land. The manual for a biology lesson presents 4 groups of animals of this ecosystem, some of them still live at depth, while others have disappeared, become extinct. The students will...

Ecological groups of animals - presentation

The presentation gives an idea of the ecological groups of animals. Schoolchildren will have to learn a classification that is far from traditional, involving division into groups and families. These groups include completely different representatives, but they have common features. To study the topic for 7th grade students in a biology lesson, this manual, offered to download from the link, will help. As a result, 7th graders...

Insectivorous mammals - presentation

The presentation introduces schoolchildren to the detachment of insectivorous mammals. This large group of animals will be studied by 7th grade students in a biology lesson. To make the teacher's story memorable, emotional and convincing, we suggest downloading a ready-made manual, in which there is a lot of interesting textual material, enough pictures that will attract the attention of viewers. From the work, students learn about the representatives of the family ...

Hedgehogs - presentation

The presentation introduces children to hedgehogs. Varkentin Anton tells about these prickly animals in his work. The author presented a number of interesting material about the hedgehog, supplemented his story with pictures. Downloading the manual is offered for showing to children in the lesson when discussing the topic of forest or insectivorous animals. The slides will be equally interesting for elementary school students...

Shark Presentation

A presentation about predatory sharks will be a wonderful tool for a biology lesson. It is offered to download it to those who consider fish orders. The manual contains many interesting facts about sea piranhas. Even more attractive for seventh graders will be illustrations that demonstrate the main character of the story. The work is built in accordance with the plan: the first mention of sharks; ...

Stingrays - presentation

The presentation about stingrays was made by a 7th grade student. The work is interesting, useful, well-designed. The topic is widely disclosed, so it is recommended to download the manual to demonstrate the material in biology lessons. In her project, the schoolgirl pays attention both to the external structure of the stingrays, and to the peculiarities of their movement and lifestyle. Her attention was drawn to fish resembling...

Marine fish - presentation

The presentation will introduce marine fish, which are of great commercial importance. In development, which is replete with numerous pictures and attracts interesting tests, good enough material to use in a biology lesson in grade 7. However, the manual can also be downloaded for elementary school students to show it when studying the topic in the lesson of the world around....

Mole - presentation

The presentation tells about the main digging animal - the mole. This amazing creature lives underground, never comes to the surface and feels great in the dark. This character is known to children from the fairy tale "Thumbelina", but not many have seen him in reality. Now you can get more complete information about it from the multimedia guide, which ...