In a distant foggy rainy country - England lived - there was a great scientist. His name was Robert Hooke. He was engaged in a very interesting and important business - research. For this, he invented a miracle - an apparatus that magnifies and helps to see: from which small organisms are built - a microscope. Once, on a warm winter evening, Robert Hooke decided to examine under a microscope ………………………………… .. There he saw many - many balls.
Robert zoomed in to see what parts these balls are made of.
Today I invite you to become researchers.
Organizes and directs the activities of students towards the active and conscious assimilation of new material.
(The inscription on the board: CELL is a living brick of the body.)
Read what is written on the board? What do a brick and a cage have in common? (Buildings are built with bricks, and an organism is built with cells.)
It is the cell that forms the basis of any organism. Slide 1
What would you like to know about the cage? (Students: find out the structure of the cell, what work does it do in the body?)
Teacher: Now look at the slide and compare, did our lesson goals coincide?
1. Learn the structure and function of the animal cell.
2. Determine the role of each organoid in the life of the cell.
3. Learn to recognize organelles by their appearance. Slide 2
Now we can clearly see that our goals coincided and therefore.
Forward to " JOURNEY IN THE CELL»!!! Slide 3
And why do you need to know the structure of the cell. (Student Answers)
It is in the cells that changes that lead to diseases begin to develop. Therefore, doctors often need a very detailed study of the cells of a sick person, their structure, shape, chemical composition, and metabolism. The concept of the structure and development of a cell is widely used in genetics - the science of heredity and variability of organisms. Sometimes knowledge of cell theory helps forensic scientists to find a criminal, establish paternity, and reveal much more - exciting, mysterious, unknown.
Every self-respecting traveler should check how well he is going. What can we take with us on the journey of knowledge?
(Students: - equipment (microscope, textbook, additional material). Slide 4
Teacher: Right, but we still have to take with us one of the most important things - the knowledge base that we have accumulated in the previous lessons.
So the cage seems to be small
But look through the microscope:
After all, this is a whole country ... These words will become our motto.
Game "Complete the sentence"
When they say that the human body works like a clock, they mean that the nervous system, while simultaneously controlling the vital activity of all systems, allows the body to make all the necessary movements with the help musculoskeletal apparatus that a person has a healthy heart, which ensures the movement of blood through the body, and good lungs- gas exchange. At the same time, the digestive system provides digestion food, and the urinary and digestive organs together take out waste products of metabolism from the body. Each organ system is essential for the life and activity of the human body.
Man belongs to the world of wildlife
Let's go on a journey….
So, write down the topic of the lesson in the route sheets.
Consider what the tissues of different human organs look like
We saw many, many balls that are similar in shape to a cage.
Having done the work, you mark the structure of the cell in the route sheets and draw a conclusion.
Student speeches
Despite its tiny size, the cage is unusually complex. Thousands of different chemical reactions are constantly going on in each cell. It is not without reason that it is compared to a chemical plant. Let's get acquainted with the amazing and complex structure of the cell. Slide 6
Any cage is covered on the outside shell./ membrane / The membrane separates the contents of the cell and the cell from the external environment. There are holes in it – pores... The pores in the cell membrane are necessary for metabolism with the environment, through which water and other substances enter and exit the cell. Slide 7
Inside the cell, all of its space is occupied by a colorless viscous substance. it cytoplasm... It moves slowly - this is one of the properties of a living cell. This liquid carries nutrients. With strong heating and freezing, it collapses, and then the cell dies.
The nucleus is located in the cytoplasm. Core- the main organoid of the cell, it controls all vital processes. It contains special little bodies - chromosomes, which store all information about the cell, which, without dying, will be transmitted from cell to cell, from generation to generation, carefully carrying the baton of Life. Slide 8
Metachondria- located in the cytoplasm of cells. Their shape is different. They can be oval, rod-shaped, filamentous. Participate in the exchange of oxygen, cells are called "energy stations".
Endoplasmic reticulum–The endoplasmic reticulum connects the main organelles of the cell. Represents a system tubules and cavities... Nutrients are produced here.
Lysosomes are small bubbles. With their help, intracellular digestion is carried out. Their main role is the removal of waste food from cells
Microfilaments-this is very thin protein filaments with a diameter of 5-7 nm. They help the cell move.
Almost all animal cells contain hollow cylindrical unbranched organelles calledmicrotubules ... They help the cell to maintain its shape.
Output: cells of any human organ, interconnected by the intercellular substance, formthe clothof this organ / nerve cells form nerve tissue, fat cells - adipose, muscle cells - muscle tissue /
Like organ systems, cells work in concert with their neighbors.Slide 9
The lesson "The cell is the basis of the structure and growth of living organisms" in the topic "General acquaintance with the human body" is aimed at creating an environment for bringing students to an understanding of the complexity and perfection of the structure of a living organism, the mutual consistency of organs; contributes to the formation of the idea that a person is an integral part nature. The content of the lesson will acquaint children with the basis of the structure and growth of living organisms - the cell. The lesson is designed to arouse the interest of children in knowing themselves.
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Topic: “General acquaintance with the human body. The cell is the basis of the structure and growth of living organisms. "
Goals :
- Create an environment for leading students to understand the complexity and perfection of the structure of a living organism, the mutual consistency of organs.
- To contribute to the formation of the idea that man is an integral part of nature.
- To acquaint with the basis of the structure and growth of living organisms - the cell.
- Arouse the interest of children in knowing themselves.
Equipment:
Handouts (individual and classy; microscope, onion peels, orange slices, chicken eggs, peas, plastic bags, cardboard boxes and a poster with children's photos.), A poster "Forms of plant cells."
- Introductory conversation with homework check.
A person lives in the world around him. He is part of this world. Can a person be considered a part of nature?
Yes.
Prove.
He breathes, eats, grows, develops, he has children.
Being a part of nature, a person creates conditions for himself in which he would feel comfortable. Right?
Yes.
Explain.
Builds houses, roads. Held the light. He made many inventions: telephone, television, airplane, computers.
For what purpose does a person continue to invent something?
In order to facilitate your work.
Such as?
Conveyors, computer robots, household appliances, agricultural machines, etc.
So, a person seeks to improve the world around him. And, of course, a person strives to improve himself in this world.
Let's imagine that we are looking at ourselves in the mirror. What did you see outside?
Our body: head, torso, limbs.
Let's check ourselves: let's listen to the poem "Human Body".
Everyone should have
Very smart ... head
I twist to her as best I can
The head sits on ... the neck
Tummy, back, chest
Together ... they are called the body.
Hands - to caress, work,
Drink water from a cup.
Fast legs are running along the path.
I stumbled across Genka
And hurt my knee.
But our body is covered with skin. It is not transparent and does not allow you to see what is hidden under it. But at the present time we know a lot about what is inside us.
What do you know?
Where did it come from?
How did this knowledge come to us?
I must say a huge thank you to the scientists, who obtained knowledge under conditions and passed it on to us.
There is an example in the history of science: 365 years ago, English medical student William Harvey came to Italy to finish his education. He was interested in the internal organs of a person, and he began to dissect corpses. I must say that at that time it was considered a crime to touch the dead. And the person who decided on this was burned at the stake like a sorcerer. And Harvey, secretly hiding from witnesses in the basement of an abandoned house, continued his experiments. This is how this man risked his life. He made unique discoveries, without which science and medicine would not have advanced.
So let's see how well you know some of our internal organs.
(Demonstration of illustrations, verbal explanation)
A hollow bag in which food is digested in half (stomach).
The motor is the size of a fist. Continuously drives blood. (Heart)
That with which a person breathes (lungs)
The organ that plays the role of the camera (eye)
The largest and hottest organ like a stove that destroys germs and poisons in the blood (liver).
These organs purify the blood. Waste is discarded in the form of water (kidney).
These organs chew food (teeth).
The internal organ, which monitors the correct functioning of the main internal organs, is in charge of the thoughts and feelings of a person (brain)
And this, guys, is not all the organs that form a single whole (we read the word from the highlighted letters) - organism.
Help define:
The human body is a complex system of organs that interact with each other and form a single whole.
2. Charging.
3. Determination of the topic of the lesson:
Now I ask you to think: have you changed a lot since your birth?
Yes.
How?
We have grown.
Why do you think?
Let's work with the tutorial. P.19. Topic - questions and text are read independently. So, complete the sentence on the board:
The basis of the structure and growth of living organisms... This is the topic of our tutorial.
All living organisms are made up of cells.
Man and plants, cat and frog, microbe and algae. A microbe alone is one cell, and an apple leaf contains 500 million cells. There are giant cells (although now you don't know about them), and there are cells that are difficult to see even under a microscope. The English naturalist Robert Hooke has perfected the microscope for over 200 years and, examining the cover of an elderberry, unexpectedly discovered living cells.
4. Practical work. (Group work)
I invite you to be in the role of researchers and do some practical work: under the microscope we have a preparation (onion skin). Let's remember the rules for working with a microscope.
- Direct the light with a mirror into the opening of the stage.
- The drug is fixed on a glass slide.
- Raise the tube slowly until a clear image appears.
On the desk procedure.
- Examine the cage.
- Fill in.
- Sketch a cell.
Group work: sketched the cage on the album sheet.
We will listen to the representatives of the groups:
The shape is different, but we saw a cage wall and a dot inside.
And now work with the textbook from 20. Your task is to compare your drawing with the drawing in the textbook, to explain why there is an orange slice and an egg on your table.
Independent reading of two paragraphs.
Conversation after reading the text:
Why are you offered an orange slice? (an example of cells visible to the eye, only the structure of the cell itself is not visible)
And here are some more examples of the forms of plant cells:
Crack the egg and gently release the contents onto a saucer.
Is it true that the egg can serve to demonstrate the structure of the cell?
What is the structure of the cell? (nucleus, cytoplasm, membrane)
Make pairs: core - yolk; cytoplasm - protein; shell - shell.
The cell is a complex system that can be viewed under an electron microscope. We learn about what the electron microscope can tell by reading the material of the article on pages 20-21.
Discussion of the read and formulation of the conclusion:
A cell is a living organism: it breathes, feeds, grows, multiplies by dividing into new cells, performs different work and acquires different properties, dies.
5. Lesson summary:
What have you learned?
What made the biggest impression?
What would you like to know?
I propose to draw up the simplest model of the cell. Take what you need (There are various objects on the table, among which children will choose a plastic bag and a pea. This choice is due to the good clarity.)
6. Assessment and Homework:
Qualitative assessment of group work.
General assessment of the work of the class: they worked actively, amicably, and everyone receives as a gift a drawing of a cell, which was examined under a more complex device than our microscope. Place the drawing in your notebook and add explanations to it. The tutorial article on pages 19 - 23 will help you;
If you wish, for those who are interested, using the information sheet, you can prepare reports about scientists and their research revealing the reasons for the growth of any organism, explaining the connection between cell life and the human lifestyle.
World lesson in 4th gradeUMK system L.V. Zankova
Teacher Titova Svetlana Anatolyevna MBOU "Stepnovskaya Secondary School"
Lesson topic ... The cell is the basis of the structure and growth of living organisms.
Target. Organize student work with text to get the following results:
subject: 1. names the constituent cells; 2. names the types of cells and types of tissues; 3. establishes causal relationships; 4. talks about the life of the cell; 5. talks about the life span of cells;
metasubject
cognitive:
Finds the necessary information to solve a didactic problem using a textbook;
- records ( fixation) information in the form of a table, schemes;
2.communicative:
- distributes functions, roles in joint activities, taking into account the interests and capabilities of partners;
3.regulatory:
Plans actions in accordance with the assigned task;
Controls the result.
During the classes.
1.Organizational moment2. Checking homework. Introduction to the topic of the lesson.
What tasks did you complete at home?
Group work.
Show each other your photos, your notes.
What conclusion can be drawn?
Why have you grown up?
We measured our weight, height and wrote it down in a workbook. With the help of parents, height and birth weight were recorded. Have compared the photos (I am a preschooler, I am currently).
Children share their experiences in groups.
We have grown up, our appearance has changed, weight has changed….
Children's assumptions: all living organisms grow; the bones have become larger; we are made of cells, and they grow….
3. Goal-setting.
You guys have made a lot of assumptions about why a person is growing. But, the truth is always one. What goal can you set for the lesson?
Children formulate a goal:
Find out the reason for the growth of a person.
4. Work on the topic of the lesson.
1.Work in a group (Fig. on page 20 "Cell structure", a chicken egg cell in a saucer and Fig. "Onion husk cell" (magnification under a microscope).
Compare the pictures and the hen's egg. Based on the results of observations, fill in the scheme "Structure of the cell"
What conclusions can be drawn?
Present your diagrams, tell us what parts the cell consists of.
2. Working with text. Converting information into a schema, table. Children receive packages with prepared tables, diagrams, ready-made words and expressions. It is necessary, using the text of the textbook, to fill in the tables and complete the diagram (pp. 21-23).
Table for gr. No. 1.
Scheme for gr. No. 2
Cell life span
Table for gr. No. 3.
Table for gr. No. 4.
Vital activity of the cell
3. Presentation of the results of the work of the groups.
Children compare a chicken egg and a drawing, fill in the diagram
Cell structure
nucleus cytoplasm membrane
CONCLUSION 1: a chicken egg is a cage.
CONCLUSION 2: cells are invisible to the eye and those that can be seen without a microscope.
Children talk about the structure of the cell by demonstrating a diagram.
With the help of text, children fill out tables and draw up a diagram.
Children demonstrate results:gr. No. 1.
fabric name
example
bone
bone tissue, cartilage
leg bones, arm bones
epithelium
epithelial tissue
leather
nervous
nervous tissue
eye nerve
muscular
muscle
arm muscles
gr. No. 2
Cell life span
long short
muscle cell epithelial cells
nerve cell (renewed in 1-2 days -
in the intestines; updated
after 1-2 weeks - skin cells
Table for gr. No. 3.
Causal relationships
consequence
cells work a lot
cells receive a lot of nutrients, oxygen
cells work little
cells receive little nutrients, oxygen
the athlete is constantly engaged in physical work
muscles grow and get stronger
muscles weaken
a person needs outside help, walks with difficulty
a person is ill for a long time, lies in bed
muscles weaken
gr. No. 4.
Vital activity of the cell
proof, condition, examples, corollary
cell is a living organism
breathes, feeds, reproduces, grows, dies
the cell dies
no oxygen, no food
the cell grows and divides
eat breath, eat food
cells work
some substances turn into others
5. Reflection.
So why is man growing?
Show the process of cell division using a diagram. Each group has a hint. But, you can handle the task without her.
Diagram "The process of cell division"
prompt:
The human body is made up of cells. Cells are living organisms. They grow, share, there are more of them, and we grow.
Children demonstrate diagrams:
6. Homework
- No. 9 p. 5 (workbook)
The lesson of the world around in the 4th grade. "The cell is the basis of the structure and growth of living organisms."
Summary of the lesson on the world around the 4th grade on the topic "The cell is the basis of the structure and growth of living organisms" Description of the material: I bring to your attention a summary of the lesson on the subject "The World Around". This material is intended for primary school teachers, when studying the topic "The cell is the basis of the structure and growth of living organisms", grade 4. This lesson uses critical thinking techniques, various forms of working with text.Tasks:
1. To create an environment for leading students to understand the complexity and perfection of the structure of a living organism, the mutual consistency of organs.
2. To acquaint with the basis of the structure and growth of living organisms - the cell.
3. Arouse the interest of children in knowing themselves.
Equipment:
- handouts (individual and classy; microscope, onion peel, orange slices, chicken eggs, peas, plastic bags)
1. Introductory conversation with homework check.
- A person lives in the world around him. He is part of this world. Can a person be considered a part of nature?
- Yes.
- Prove it.
- He breathes, eats, grows, develops, he has children.
People always got sick, got injuries, bruises. Who were the first healers?
- Women
- Name the "Father of Medicine"
- Hippocrates
- What areas of knowledge is medicine related to?
- physics, chemistry, biology.
- So, a person seeks to improve the world around him. And, of course, a person seeks to improve himself in this world.
- Let's imagine that we are looking at ourselves in the mirror. What did you see outside?
- Our body: head, torso, limbs.
Let's check ourselves: let's listen to the poem "Human Body".
Everyone should have
Very smart ... (head)
I twist to her as I can
The head sits on ... (neck)
Tummy, back, chest
They are together ... (body) called.
Hands - to caress, work,
Drink water from a cup.
Fast legs are running along the path.
I stumbled across Genka
And hurt my knee.
But our body is covered with skin. It is not transparent and does not allow you to see what is hidden under it. But at the present time we know a lot about what is inside us.
- What do you know?
- And from where?
- How did this knowledge come to us?
- I must say a huge thank you to scientists
- So, let's see how well you know some of our internal organs.
Guess the word game
One student stands in front of the class (driver), the other - behind him shows the class
tablets with terms to be interpreted. Interested students explain
leading the meaning of the word (in its features), leading the interpretation guesses the term.
The plaques that have been guessed are handed over to the driver. Bad interpretations of words
are collectively corrected. A disciple who offers a misinterpretation of a word receives
penalty point.
Words for interpretation:
Heart, stomach, liver, lungs, eyes, intestines.
Crossword solution
Write words horizontally, guess the selected word vertically.
1. That with the help of which a person breathes (lungs)
2. A hollow bag in which food is digested in half (stomach).
3. Motor the size of a fist. Continuously drives blood. (Heart)
4. the organ where the organs are located - the tongue and teeth. (mouth)
4. These organs purify the blood. Waste is discarded in the form of water (kidney).
5. The organ that plays the role of a camera (eyes)
- And this, guys, is not all the organs that form a single whole, what is the whole? - an organism.
Give a definition:
The human body is a complex system of organs that interact with each other and form a single whole.
2. Physical minutes
3. Determination of the topic of the lesson
- guys, do any of you know what height and weight you were at your birth?
- your body has changed over time, what happened to you?
- We have grown.
- Why do you think?
Let's work with the tutorial.
"I'm ready to answer!" The class is divided into groups. Each group works with a textbook.
It is proposed to find the required text by the table of contents in 5-7 minutes, read and view it,
choose the most important and interesting, prepare a message for 1-2 minutes.
The teacher asks any student. Everyone should be ready to answer.
According to his story, the quality of the group's preparation is assessed.
P.19.
So, complete the sentence on the board:
_____________ is the basis of the structure and growth of living organisms. This is the topic of our tutorial.
All living organisms are made up of cells.
Man and plants, cat and frog, microbe and algae. A microbe alone is one cell, and an apple leaf contains 500 million cells. There are giant cells (although now you don't know about them), and there are cells that are difficult to see even under a microscope. The English naturalist Robert Hooke has perfected the microscope for over 200 years and, examining the cover of an elderberry, unexpectedly discovered living cells.
4. Practical work.
I invite you to be in the role of researchers and do some practical work in groups: under the microscope we have a preparation (onion skin). Let's remember the rules for working with a microscope.
1. Direct the light with a mirror into the opening of the stage.
2. The preparation is fixed on a glass slide.
3. Raise the tube slowly until a clear image appears.
The order of actions on the board.
1. Consider the cage.
2. Fill in the sheet.
3. Illustrate the cell.
Group work: sketched the cage on the album sheet.
- We listened to the group commanders:
- The shape is different, but we saw a cage wall and a dot inside.
In front of you on the table are an orange slice and an egg, try to explain what they are for. You need to compare your drawing with the drawing in the tutorial on pages 20-21 of the tutorial.
- Independent reading of two paragraphs.
Conversation after reading the text:
- Why are you offered a slice of orange? (an example of cells visible to the eye, only the structure of the cell itself is not visible)
And here are some more examples of the forms of plant cells:
Guys, formulate the conclusion what a cell is:
A cell is a living organism: it breathes, feeds, grows, multiplies by dividing into new cells, performs different work and acquires different properties, and dies.
- look at the picture on page 22 (different cells - bone, nerve, muscle, epithelial cells).
- Communicate in groups, and determine what is common in their structure. What are the differences.
Read the text and give a definition of "Fabric".
- cells that have the same structure, put together and do the same job.
5. Lesson summary:
-What did you find out?
- What made the greatest impression?
- What would you like to know?
Game "Examiners". It is conducted individually or in groups. Students are invited, using a textbook or additional literature, to prepare questions for the class on the topic studied.
I propose to draw up the simplest model of the cell. Take what you need (There are various items on the table, among which children will choose a plastic bag and a pea)
6. Assessment and Homework:
Qualitative assessment of group work.
If you wish, you can prepare reports about scientists and their research revealing the reasons for the growth of any organism, explaining the connection between the life of a cell and the way of life of a person.
7. Reflection
Primary school teacher Faizullina O.V.
So the cage seems to be small
But look through the microscope:
After all, this is a whole country ...
Lesson type: a lesson in the formation and improvement of knowledge.
The purpose of the lesson:
promotion of a healthy lifestyle, based on interdisciplinary connections in a modern school and using interactive equipment.
Tasks:
educational:
Create conditions for the formation of ideas about the structure of the cell in children; to acquaint with the distinctive features of plant and animal cells;
To generalize and consolidate knowledge about the structure and functions of the main parts and organelles of the cell
To trace the interdisciplinary connections of biology with literature and physical culture on the issues of a healthy lifestyle;
Create conditions for the formation of the ability to see, compare, generalize and draw conclusions;
Developing:
Develop a cognitive interest in the world around us by attracting entertaining material, creating problem situations;
Develop logical thinking, imagination, perception, speech;
Develop students' observation ability and creativity.
Educational:
To form the communication skills of students, a culture of dialogue communication;
Promote a healthy lifestyle;
Raise interest in the world around you, a desire to learn and make discoveries.
Personal UUD:
Internal position of the student;
Educational and cognitive interest in new educational material;
Orientation on understanding the reasons for success in educational activities;
Self-analysis and self-control of the result;
The ability to self-assess based on the criteria for the success of educational activities.
Cognitive UUD:
Search and selection of the necessary information;
Application of information retrieval methods;
The ability and skill of students produces simple logical actions (analysis, comparison).
Communicative UUD:
Skills are formed to explain their choice, build phrases, answer the question posed, argue;
Ability to work in pairs, taking into account the position of the interlocutor; organize and carry out cooperation with the teacher and peers.
Regulatory UUD:
Control in the form of comparing the method of action and its result with a given standard;
Correction;
Grade.
Methods:
verbal - a conversation based on the knowledge of students;
visual - demonstration of videos, visual aids, additional literature, presentations;
practical - work with interactive simulators;
research - the search for the correct answers to the questions posed, from ignorance to knowledge;
Methodical techniques:
logical - identifying common features, differences, formulating conclusions;
organizational - frontal, group, individual work of students;
technical - the use of visualization, interactive equipment.
Equipment : computer, microscopes, multimedia projector, ecwounds
During the classes:
Lesson stages, goal
Hello, sit down. On the tables you have: a textbook, school supplies, a microscope, a lesson route sheet. So ... The bell rang, the lesson begins. I will smile at you, and you smile at each other. We are kind and welcoming. We are all healthy. Take a deep breath and exhale. Exhale yesterday's hurt, anxiety. Breathe in the freshness of a winter day. I wish you a good mood and respect for each other. Join hands and repeat:We are intelligent!We are friendly!We are attentive!We are diligent!We study great!We will succeed in everything!2. Setting the goal and topic of the lesson Target:organize and direct the cognitive activity of students to the goal
3. Motivation. Creation of a problematic situation. Prepare students for the active and conscious assimilation of new material.
II ... Knowledge update. Purpose: to repeat and summarize the knowledge of students on the topic covered.
1. Introduction of new knowledge based on the experience of children. Purpose: to identify the level of knowledge on the topic being studied Learning new material:Introduction to the topic.Immersion in the topic.
III .Fizminute (3min) IV .Initial securing of new material.
V .Work on the textbook
VI ... Anchoring Purpose: to repeat and consolidate the material studied.
Vii. Lesson summary
1. Reflection. (1 minute)
2.Homework
In a distant foggy rainy country - England lived - there was a great scientist. His name was Robert Hooke. He was engaged in a very interesting and important business - research. To do this, he came up with a miracle - an apparatus that magnifies and helps to see: what small organisms are built of - a microscope. Once, on a warm winter evening, Robert Hooke decided to examine under a microscope ………………………………… …………………… For a long time he adjusted the microscope, sat down more comfortably and looked through the eyepiece. There he saw many - many balls. Robert zoomed in to see what parts these balls are made of.Today I invite you to become researchers.Organizes and directs the activities of students towards the active and conscious assimilation of new material.
(
The inscription on the board: CELL is a living brick of the body.)
- Read what is written on the board? What do a brick and a cage have in common? (Buildings are built with bricks, and an organism is built with cells.)It is the cell that forms the basis of any organism.slide
- What would you like to know about the cage? (Students: find out the structure of the cell, what work does it do in the body?)
Teacher: Now look at the slide and compare, did our lesson goals coincide?1. Learn the structure and function of the animal cell.2. Determine the role of each organoid in the life of the cell.3. Learn to recognize organelles by their appearance.
Now we can clearly see that our goals coincided and therefore.Forward to "JOURNEY IN THE CELL
»!!!
And why do you need to know the structure of the cell. (Student Answers)
It is in the cells that changes that lead to diseases begin to develop. Therefore, doctors often need a very detailed study of the cells of a sick person, their structure, shape, chemical composition, and metabolism. The concept of the structure and development of a cell is widely used in genetics - the science of heredity and variability of organisms. Sometimes knowledge of cell theory helps forensic scientists to find a criminal, establish paternity, and reveal much more - exciting, mysterious, unknown.
Every self-respecting traveler should check how well he is going. What can we take with us on the journey of knowledge?
(Students: - equipment (microscope, textbook, additional material).)Teacher: Right, but we still have to take with us one of the most important things - the knowledge base that we have accumulated in the previous lessons.
Game "Complete the sentence"
When they say that the human body works like a clock, they mean that the nervous system, while simultaneously controlling the vital activity of all systems, allows the body to make all the necessary movements with the helpmusculoskeletal apparatus that a person has a healthyheart, which ensures the movement of blood through the body, and goodlungs - gas exchange. At the same time, the digestive system providesdigestion food, and the urinary and digestive organs togethertake out waste products of metabolism from the body. Each organ system is essential for the life and activity of the human body.
Man belongs to the world of wildlife Let's go on a journey….
So, write down the topic of the lesson in the route sheets.
Consider what the tissues of different human organs look like
We saw a lot of balls that are similar in shape to a cage
Having done the work, you mark the structure of the cell in the route sheets and draw a conclusion.
Student speeches
Despite its tiny size, the cage is unusually complex. Thousands of different chemical reactions are constantly going on in each cell. It is not without reason that it is compared to a chemical plant. Let's get acquainted with the amazing and complex structure of the cell.Any cage is covered on the outsideshell ./ membrane / The membrane separates the contents of the cell and the cell from the external environment. There are holes in it– pores . The pores in the cell membrane are necessary for metabolism with the environment, through which water and other substances enter and exit the cell.Inside the cell, all of its space is occupied by a colorless viscous substance. itcytoplasm . It moves slowly - this is one of the properties of a living cell. This liquid carries nutrients. With strong heating and freezing, it collapses, and then the cell dies.
In the cytoplasm is locatedcore.Core – the main organelle of the cell, it controls all life processes. It contains special little bodies - chromosomes, which store all information about the cell, which, without dying, will be transmitted from cell to cell, from generation to generation, carefully carrying the baton of Life.
Metachondria - located in the cytoplasm of cells. Their shape is different. They can be oval, rod-shaped, filamentous. Participate in the exchange of oxygen, cells are called "energy stations".
Endoplasmic reticulum – The endoplasmic reticulum connects the main organelles of the cell.Represents a systemtubules and cavities... Nutrients are produced here.Lysosomes are small bubbles.With their help, intracellular digestion is carried out.Their main role is the removal of waste food from cellsMicrofilaments -this isvery thin protein filaments with a diameter of 5-7 nm.They help the cell move.Almost all animal cells contain hollow cylindrical unbranched organelles calledmicrotubules ... They help the cell to maintain its shape.Output : cells of any human organ, interconnected by the intercellular substance, formthe cloth of this organ / nerve cells form nerve tissue, fat cells - adipose, muscle cells - muscle tissue /Like organ systems, cells work in concert with their neighbors.
Insert missing wordAll cells are separated from each other by a cellular (plasma) ... - a dense transparent membrane.The living contents of the cell are represented by a colorless viscous translucent substance -….Numerous .... are located in the cytoplasm.The most important organelle of the cell is .... which stores hereditary information.The energy center of the cell….Terms: cytoplasm, mitochondria, cell, membrane, nucleus, organellesWrite out the basic functions of cells
- Provide the body with oxygen Protect against germs Help to move Forms a moist protective layer
Independent work Test
1. Who is the discoverer of cells?A. M. LomonosovB. J. BrunoV.R.Guk2. What is the name of the device for observing living cells?A. BinocularsB. MicroscopeB. Telescope3. What organisms are made of cells?A. Plants onlyB. Animals onlyB. All living organisms4.Set the correspondence:
1 Core
5. What is the reason for the growth of any organism?
A. Cell nutrition
B. Cell Breathing
B. Cell division / promotes the growth of a person, his bones, healing of wounds, cuts, damaged muscles, fusion of broken bones. /
6. How many types of cells are there in the human body?
A. 100
B. 200
H 300
Unfortunately, it's time for us to return the journey has come to an end
Output: a cell is a living brick of the body, we can call it not only a brick - a "particle" of our body, but also a whole country in which its citizens live, each of whom does his own work, necessary for this country. Like organ systems, cells work in concert with their neighbors.
…So the cage seems to be small
But look through the microscope:
After all, this is a whole country ...
In the itinerary, evaluate the work in the lesson, highlighting the desired smiley.
Grading
1. Page 12-13, textbook TS 4-5
2. Prepare a message about the opening of the cell
3. Write a tale about the adventures of cell organelles.
The lesson is over, THANKS everyone!
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