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experimental
and a research session in the preparatory group
"Miracles in the laboratory"
on this topic: " MILK ... MILK PRODUCTS »
Educator: Shakhova N.A.
Target: creation of favorable conditions for the use of various types of activities, their integration in order to increase efficiency in the cognitive and research process. In the process of children's experimentation, satisfy the children's need for knowledge, independence, joy.
Tasks:
Educational:
to form ideas in children about the benefits of milk and dairy products for the human body;
teach children to be mindful of their diet.
Developing:
teachchildrenconduct elementary and accessible experiments, build hypotheses, look for answers to questions and make simple conclusions, analyzing the resultexperimental activities;
develop cognitive interest inchildrenin the process of organizing elementaryresearch, experiments, observations and experiments, the desire to share information, participate in joint experimental and experimental activities, the desire to learn new things;
develop the spoken language of children, expand vocabulary.
Educational:
to bring up in children a healthy lifestyle, the ability to work in a team, kindness, caring attitude towards each other.
Activities: cognitive, research.
Forms of organization: group, individual
Forms of implementation of children's activities: child experimentation
Equipment:
white sheets of paper where children will write letters;
brushes for writing letters;
pipettes;
plastic cups,
saucers,
lemon acid,
soda,
cotton swabs,
milk,
water,
gouache,
liquid soap,
Coca Cola,
iodine;
food colorings;
a set of dummies of dairy products,
trays;
emoticons for each participant with a cheerful, sad and good mood;
multimedia equipment,
presentation on the topic of the lesson
white robes;
cookbooks with recipes,books on healthy food
steering wheels from the car…
Preliminary work:
conducting an experiment with milk and Coca-Cola;
experiment with milk if left in the refrigerator and in a warm place;
reading poems about milk, solving riddles about dairy products.
PROCESS OF THE LESSON
Introductory part.
I will guess riddles
So sophisticated!
Who will guess the riddles
Goes to the laboratory.
And to the laboratory, not easy, but scientific, wonderful.
Are you ready for the challenge? Shall we solve riddles?
You not only need to guess the riddles, but also find the answer at our food exhibition.
White water,
It will be useful to all of us.
From white water,
Do whatever you want:
Cream, curdled milk,
Butter in our porridge,
Curd for a pie,
Eat, Vanya, friend!
Milk
Very fond of children
Chill in the package.
Chill, chill
Let me lick you once!
Ice cream
Guess who she is
Snow-white, thick?
Whipped cream early in the morning
So that we have ... Sour cream
What are these white grains?
Not grain or snowflakes.
Sour milk - and on time,
We got ...
Curd
It is made of milk
But his sides are firm.
There are so many different holes in it.
Have you guessed? This...
Cheese
We will spread it on bread,
And add to different cereals.
Porridge will not be spoiled for sure
White-yellow pieces.
Butter
Children find and show dairy products that are on display at the dairy exhibition.
What good fellows you are! Coped with the task quickly !! Found all the answers right!
Maybe someone guessed and understood what we are going to talk about today? (About milk and dairy products)
What dairy products have we not mentioned yet? (Kefir, yogurt, yogurt, condensed milk, fermented baked milk, snowball, ... ..)
What kind of milk dishes do the chefs prepare for you in the kindergarten? (Milk soups, cereals, sauces, cottage cheese casseroles, coffee drink, milk tea, lazy dumplings ...)
What do moms like to pamper you with? What is cooked, cooked for you from dairy products? (Pancakes, pancakes, dumplings, shanies, donuts ... ...)
And if you do not know, mother or grandmother, how to cook this or that dish, then how and where can you find out? (In books about healthy food, cookbooks, on the Internet, ask friends, watch TV….) Exhibition of cookbooks and recipes.
Here's a look at ourbook exhibition , where there are different recipes and you can find out what dishes and how you can cook from milk.
Main part.
Well done, guys, they guessed all the riddles, answered difficult questions.
Maybe you also want to tell something about milk, its properties, benefits or harms?
Come all over, sit down (Near laptop)
Educator's story and talk about the benefits of milk. Show presentation.
Milk was given to us by Mother Nature. Nature is arranged so that newborn children and animals know how and love to drink milk. (Slide 1 The baby drinks breast milk, kittens drink milk).
From early childhood, mothers begin to give their children different dairy products: cottage cheese, cream, kefir, sour cream, yogurt, cheese, butter ... (Slide 2 Photo with dairy products).
Where does milk come from? Who gives it to us? (Cows)
Adults and children know
And it is known to the whole planet
No healthier in the morning -
Drink a cup of milk!
To keep everyone healthy
A cow gives it to us!
Who else? (Goats ...)
It's no secret that cows and goats give us milk. What is the name of cow's milk? (Cow) Goat? (Goat)
There are other animals in the world that give milk. Do you know these animals? (Slide 3)
For example, a horse. Horse milk is used to produce a very healthy drink called koumiss. (Slide 3).
Camel milk - sweet, healthy; residents of Asian regions appreciate and love him very much. (Slide 4).
And where it is always cold, and there are problems with the delivery of fresh cow's milk, deer help people out. The northerners learned to make cheese, curd products, butter from reindeer milk. (Slide 4).
Milk occupies a special place in baby food. Casserole, milk soup, porridge with butter, dumplings, pancakes, condensed milk with pancakes made with milk, and everyone's favorite ice cream - all these children eat with pleasure. (Slide 5).
The most important component of milk is protein. If a person does not consume protein for a long time, this will have a bad effect on his health. Milk contains vitamins, minerals and other useful substances. (Slide 6).
Do not forget, children, about milk. Eat dairy products every day. The most valuable thing a person has is his health.
Children drink milk - you will be healthy! (Slide 7).
Didactic game "What milk?"
Let's play the game "What milk?" I name an animal and throw a ball at you, and you catch and say what they call this milk. For example: a cow has cow's milk.
What kind of milk does a goat have? (Goat)
What kind of milk does a horse have? (Equine, mare)
What kind of milk does a camel have? (Camel)
What kind of milk does a cow have? (Cow)
What kind of milk does a deer have? (Deer)
Physics minute "The car goes far ..." Listening to the recording of the song and performing movements throughout the group.
The car goes far, far, far
Car carries milk, milk.
The wheels are spinning, the car is driving
Milk will come to the guys soon!
Hooray! Milk! Let's drink milk!
The car goes through the forest, through the forest, through the forest,
The car is driven by Hercules, Hercules.
We will eat porridge, our porridge,
We will feed Masha and Sasha and Dasha!
Mmm! What a delicious porridge!
The car goes over the mountains, over the mountains, over the mountains
Carries medicines to doctors, doctors.
Everyone will be healthy, healthy, healthy.
Children and even cows are happy.
Moo-oo-oo!
Experiments. Experiments. Research.
I invite all of you to the laboratory of miracles! In it we will gain knowledge, we will be friendly with milk!
Miracles with milk.
Miracle 1.SECRET INK.
How many knows how to write a secret letter or secret message?
Do you want to learn?
With the help of what we write letters, messages? (Pen, pencil, paper ...)
In the past, invisible ink was used. They were called sympathetic. Under certain conditions, they became visible (Heating, lighting, chemical developer ...)
Maybe someone guessed what this invisible ink is? (Milk)
Want to write a secret letter? Take leaflets, cotton swabs or brushes and draw or write with milk. What do you want to write or draw for your parents? And I want to draw my heart, how I love you all.
Now we need our milk to dry and become invisible. When you go home, take your leaves and give them to your parents to read. On Monday, tell us if the parents were able to do it or not.
I have also prepared a secret letter for you. What do I have written? (Nobody can read it) Want to know what it says?
Let's conduct some more of our experiments, maybe you yourself can guess how you can read it?
MIRACLE 2.What is healthier than COCA-COLA or milk?
To clearly see what we are drinking, we decided to mix cola with milk. And here's what we got.
What do I have? (Milk and Coca Cola)
What did we do yesterday? (They got mixed up)
What did we do?
CONCLUSION: Milk darkened, turned brown,THE REACTION STARTED, THE MILK COLLECTED, A SEDIMENT APPEARED IN THE FORM OF FLAKES.
Miracle3. EXPERIENCE WITH IODINE.
In some factories, milk is diluted with water and starch is added to thicken it. In this case, milk loses its beneficial properties.
And what needs to be done for this? (???????????????)
To do this, add iodine to our milk.
What's up with the milk? (………… ..)
CONCLUSION:COMBINING IODINE WITH STARCH FORMS A BRIGHT BLUE JOINT.
IF WE DO NOT HAVE A BLUE COLOR OF MILK, WHAT DO WE MAKE A CONCLUSION? (IT IS NO STARCH)
WHAT IS THIS MILK? (USEFUL)
Miracle4. EXPERIENCE "BOILING MILK"
There is an expression "MILK Escaped" Does milk have legs? (Not)
Why do they say that?
Milk "runs away" during boiling, it rises upward, and if the pan with milk is not removed from the stove in time, then some of the milk will simply run out of it.
Do you want to see how milk "runs"? We have no stove, no fire, no saucepan to boil milk.
But, we have a scientific laboratory of miracles.
Our experience will require citric acid, soda, and milk.
Let's add soda to the milk, what's going on? Now let's add citric acid.
See what's going on with milk? (It foams, boils)
CONCLUSION:THE REACTION OF SODA AND CITRIC ACID HAPPENS IN MILK. IT IS FOAMING, BUBBLING, DRINKING.
Miracle5 EXPERIENCE "COLORED MILK"
Do you guys like to draw? What are you painting on? (On leaves, in albums, on snow, sand, on asphalt ...)
What do you usually paint with? (Paints, pencils, felt-tip pens, stick, crayons ...)
Did any of you paint on milk? (Not)
Want to try?
There is milk on the tables in plates. Add a few drops of green, red, blue paint to it (with an eyedropper, brush or cotton swab).
Take another cotton swab and dip it in liquid soap. With a stick dipped in dishwashing liquid, touch the milk for literally 10 seconds. Just touching!
And then the most interesting thing begins - magic colors begin to "dance", scattering from a cotton swab. From a magic cotton swab and from a color explosion in milk. When we remove the stick, the paints continue to "dance" and move. The milk starts to move and the paint mixes. A real fireworks in a plate!
Conclusion:We see an explosion of colors. Liquid soap reacts with milk and makes the dyes move, it repels the fat that combines in the milk. Milk is made up of different types of molecules: fats, proteins, carbohydrates, and minerals. When a detergent is added to milk, several processes occur simultaneously: the detergent lowers the surface of tension, and due to this, food colors begin to move freely over the entire surface of the milk. Most importantly, the detergent reacts with the molecules in the milk and sets them in motion. This is why skim milk is not suitable for the experiment.
Well, has anyone figured out how to read a secret letter? What did I write to you?
See what I have? (Cloth and iron)
What need to do? (Iron our letter)
CONCLUSION: SOME SUBSTANCES THAT ARE CONTAINED IN MILK, UNDER THE EFFECT OF HEAT, DESTROY FASTER THAN THE PAPER ITSELF IGNITE. THIS CHEMICAL PROCESS IS PRODUCTS OF COMBUSTION. WHEN HEATING MILK SPOTS ON PAPER PROTEINS AND CARBOHYDRATES CHAR AND BECOME VISIBLE.
What did I write to you in my letter?
GOOD MEN!
Reflection.
WHO LIKED TODAY'S EXPERIMENTS, EXPERIMENTS?
Who wants to try with their parents, show what miracles we did today?
What product were we talking about today?
What conclusion can you make about him?
Children drink milk - you will be healthy!
What mood are you in now? Take an emoji with your mood and stick it on the board.
Preparatory stage Experience with milk, dyes and detergent at home. This experience is also called a color explosion in milk. But no matter how you call it, experience remains experience, and besides, it will not be difficult to do it, because every mother has all the components at home.
What is needed for a Color explosion in milk: Milk (water will not work!) - the higher the fat content of the milk, the better Dyes - you can use dyes from the Easter set Liquid soap or dishwashing liquid (we used "Fairy" on the tip with a cotton swab Deep plastic dish Pipette
Experimental Stage First, we poured milk into a bowl. You need to pour it in such a way that the bottom is completely closed, otherwise the experience will not work. Let the milk sit in a plate for a while. Milk should be at room temperature, under this condition, the experience will be more spectacular
Add a few drops of dyes of different colors to a bowl of milk (you can use a pipette for convenience. Then, using a dry cotton swab, you can touch the milk a little (no need to mix). Pay attention to the child that nothing is happening.
Educator: Biryukova M.M.
Target: creation of favorable conditions for the use of various types of activities, their integration in order to increase efficiency in the cognitive and research process. In the process of children's experimentation, satisfy the children's need for knowledge, independence, joy.
Tasks:
Educational:
to form ideas in children about the benefits of milk and dairy products for the human body;
teach children to be mindful of their diet.
Developing:
to teach children to conduct elementary and accessible experiments, build hypotheses, look for answers to questions and make simple conclusions, analyzing the result of experimental activity;
develop cognitive interest in children in the process of organizing elementary research , experiments , observations and experiments, the desire to share information, participate in joint experimental and experimental activities, the desire to learn new things;
develop the spoken language of children, expand vocabulary.
Educational:
to bring up in children a healthy lifestyle, the ability to work in a team, kindness, caring attitude towards each other.
Activities: cognitive, research.
Forms of organization: group, individual
child experimentation
Equipment:
white sheets of paper where children will write letters;
brushes for writing letters;
plastic cups,
lemon acid,
cotton swabs,
liquid soap,
Coca Cola,
food colorings;
a set of dummies of dairy products,
multimedia equipment,
presentation on the topic of the lesson
Preliminary work:
conducting an experiment with milk and Coca-Cola;
experiment with milk if left in the refrigerator and in a warm place;
reading poems about milk, solving riddles about dairy products.
PROCESS OF THE LESSON
Introductory part.
I will guess riddles
So sophisticated!
Who will guess the riddles
Goes to the laboratory.
And in a laboratory, not easy, but scientific.
Are you ready for the challenge? Shall we solve riddles?
You not only need to guess the riddles, but also find the answer at our food exhibition.
White water,
It will be useful to all of us.
From white water,
Do whatever you want:
Cream, curdled milk,
Butter in our porridge,
Curd for a pie,
Eat, Vanya, friend!
Milk
Very fond of children
Chill in the package.
Chill, chill
Let me lick you once!
Ice cream
Guess who she is
Snow-white, thick?
Whipped cream early in the morning
So that we have ... Sour cream
What are these white grains?
Not grain or snowflakes.
Sour milk - and on time,
We got ...
Curd
It is made of milk
But his sides are firm.
There are so many different holes in it.
Have you guessed? This...
Cheese
We will spread it on bread,
And add to different cereals.
Porridge will not be spoiled for sure
White-yellow pieces.
Butter
What good fellows you are! Coped with the task quickly !! Found all the answers right!
Maybe someone guessed and understood what we are going to talk about today? (About milk and dairy products)
What dairy products have we not mentioned yet? (Kefir, yogurt, yogurt, condensed milk, fermented baked milk, snowball, ... ..)
What kind of milk dishes do the chefs prepare for you in the kindergarten? (Milk soups, cereals, cottage cheese casseroles, coffee drink, milk tea, lazy dumplings ...)
Main part.
Well done, guys, they guessed all the riddles, answered difficult questions.
And now, guys, I'll tell you about the benefits of milk.
Milk was given to us by Mother Nature. Nature is arranged so that newborn children and animals know how and love to drink milk. (Slide 1 The baby drinks breast milk, kittens drink milk).
From early childhood, mothers begin to give their children different dairy products: cottage cheese, cream, kefir, sour cream, yogurt, cheese, butter ... (Slide 2 Photo with dairy products).
Where does milk come from? Who gives it to us? (Cows)
Adults and children know
And it is known to the whole planet
No healthier in the morning -
Drink a cup of milk!
To keep everyone healthy
A cow gives it to us!
Who else? (Goats ...)
It's no secret that cows and goats give us milk. What is the name of cow's milk? (Cow) Goat? (Goat)
There are other animals in the world that give milk. Do you know these animals? (Slide 3)
For example, a horse. Horse milk is used to produce a very healthy drink called koumiss. (Slide 3).
Camel milk - sweet, healthy; residents of Asian regions appreciate and love him very much. (Slide 4).
And where it is always cold, and there are problems with the delivery of fresh cow's milk, deer help people out. The northerners learned to make cheese, curd products, butter from reindeer milk. (Slide 4).
Milk occupies a special place in baby food. Casserole, milk soup, porridge with butter, dumplings, pancakes, condensed milk with pancakes made with milk, and everyone's favorite ice cream - all these children eat with pleasure. (Slide 5).
The most important component of milk is protein. If a person does not consume protein for a long time, this will have a bad effect on his health. Milk contains vitamins, minerals and other useful substances. (Slide 6).
Do not forget, children, about milk. Eat dairy products every day. The most valuable thing a person has is his health.
Children drink milk - you will be healthy! (Slide 7).
Fizminutka
We are tired, stayed too long
We wanted to warm up. (One hand up, the other down, jerkily change
Then they looked at the wall,
Then they looked out the window.
Right, left turn
And then vice versa. (Body turns.)
We start squats,
Bend the legs to the end.
Up and down, up and down
Do not rush to squat! (Squats.)
And sat down for the last time
And now they sat down on the chair. (The children sit down.)
I invite all of you to the laboratory of miracles! In it we will gain knowledge, we will be friendly with milk!
Miracles with milk.
EXPERIENCE 1. SECRET INK.
How many knows how to write a secret letter or secret message?
Do you want to learn?
With the help of what do we write letters, draw? (Pen, pencil, paper ...)
In the past, invisible ink was used. Under certain conditions, they became visible (Heating, lighting)
Maybe someone guessed what kind of invisible ink we have? (Milk)
Want to write a secret message? Take leaves, cotton swabs or brushes and use milk to draw what you want, and I want to draw my heart, how I love you all.
Now we need our milk to dry and become invisible. At the end of the lesson, we will find out what secret messages you have drawn.
EXPERIENCE 2. What is healthier than COCA-COLA or milk?
To clearly see what we drink, and to conclude that milk or Coca-Cola is healthier, we decided to mix cola with milk. And here's what we got.
What do I have? (Milk and Coca Cola)
What did we do yesterday? (They got mixed up)
What did we do?
CONCLUSION: Milk darkened, turned brown, REACTION STARTED, MILK COLLECTED, A SEDIMENT APPEARED IN THE FORM OF FLAKES.
EXPERIENCE 3. EXPERIENCE WITH IODINE.
In some factories, milk is diluted with water and starch is added to thicken it. In this case, milk loses its beneficial properties.
And what needs to be done for this?
To do this, add iodine to our milk.
What's up with the milk?
CONCLUSION: WHEN IODINE COMBINED WITH STARCH, BRIGHT BLUE JOINT FORMED.
IF WE DO NOT HAVE A BLUE COLOR OF MILK, WHAT DO WE MAKE A CONCLUSION? (IT IS NO STARCH)
WHAT IS THIS MILK? (USEFUL)
EXPERIENCE 4. "BOILING MILK"
There is an expression "MILK Escaped" Does milk have legs? (Not)
Why do they say that?
Milk "runs away" during boiling, it rises upward, and if the pan with milk is not removed from the stove in time, then some of the milk will simply run out of it.
Do you want to see how milk "runs"? We have no stove, no fire, no saucepan to boil milk.
But, we have a scientific laboratory of miracles.
Our experience will require citric acid, soda, and milk.
Let's add soda to the milk, what's going on? Now let's add citric acid.
See what's going on with milk? (It foams, boils)
CONCLUSION: THE REACTION OF SODA AND CITRIC ACID OCCURS IN MILK. IT IS FOAMING, BUBBLING, DRINKING.
EXPERIENCE 5 "COLORED MILK"
Do you guys like to draw? What are you painting on? (On leaves, in albums, on snow, sand, on asphalt ...)
What do you usually paint with? (Paints, pencils, felt-tip pens, stick, crayons ...)
Did any of you paint on milk? (Not)
Want to try?
There is milk on the tables in plates. Add a few drops of green, red, blue paint to it (with an eyedropper, brush or cotton swab).
Take another cotton swab and dip it in liquid soap. With a stick dipped in dishwashing liquid, touch the milk for literally 10 seconds. Just touching!
And then the most interesting thing begins - magic colors begin to "dance", scattering from a cotton swab. From a magic cotton swab and from a color explosion in milk. When we remove the stick, the paints continue to "dance" and move. The milk starts to move and the paint mixes. A real fireworks in a plate!
Conclusion: We see an explosion of colors. Liquid soap reacts with milk and makes the dyes move, it repels the fat that combines in the milk. This is why skim milk is not suitable for the experiment.
See what I have? (Cloth and iron)
What need to do? (Iron our letter)
CONCLUSION: SOME SUBSTANCES THAT ARE CONTAINED IN MILK, UNDER THE EFFECT OF HEAT, DESTROY FASTER THAN THE PAPER ITSELF IGNITE. THIS CHEMICAL PROCESS IS PRODUCTS OF COMBUSTION. WHEN HEATING MILK SPOTS ON PAPER PROTEINS AND CARBOHYDRATES CHAR AND BECOME VISIBLE.
What did I write to you in my letter?
Reflection.
WHO LIKED TODAY'S EXPERIMENTS, EXPERIMENTS?
Who wants to try with their parents, show what miracles we did today?
What product were we talking about today?
What conclusion can you make about him?
Children drink milk - you will be healthy!
Surprise moment: screening of the cartoon "Smeshariki-Milk bet"
Download:
Preview:
Open synopsis
experimental
and a research lesson in the middle group
"Laboratory of miracles"
on this topic: " MILK. MILK PRODUCTS»
Educator: Biryukova M.M.
Target: creation of favorable conditions for the use of various types of activities, their integration in order to increase efficiency in the cognitive and research process. In the process of children's experimentation, satisfy the children's need for knowledge, independence, joy.
Tasks:
Educational:
to form ideas in children about the benefits of milk and dairy products for the human body;
teach children to be mindful of their diet.
Developing:
educate children conduct elementary and accessible experiments, build hypotheses, look for answers to questions and make simple conclusions, analyzing the result of experimental activity;
develop cognitive interest in children in the process of organizing elementary research, experiments, observations and experiments, the desire to share information, participate in joint experimental and experimental activities, the desire to learn new things;
develop the spoken language of children, expand vocabulary.
Educational:
to bring up in children a healthy lifestyle, the ability to work in a team, kindness, caring attitude towards each other.
Activities:cognitive, research.
Forms of organization:group, individual
Forms of implementation of children's activities:child experimentation
Equipment:
white sheets of paper where children will write letters;
brushes for writing letters;
plastic cups,
saucers,
lemon acid,
soda,
cotton swabs,
milk,
water,
gouache,
liquid soap,
Coca Cola,
iodine;
food colorings;
a set of dummies of dairy products,
multimedia equipment,
presentation on the topic of the lesson
Preliminary work:
conducting an experiment with milk and Coca-Cola;
experiment with milk if left in the refrigerator and in a warm place;
reading poems about milk, solving riddles about dairy products.
PROCESS OF THE LESSON
Introductory part.
I will guess riddles
So sophisticated!
Who will guess the riddles
Goes to the laboratory.
And in a laboratory, not easy, but scientific.
Are you ready for the challenge? Shall we solve riddles?
You not only need to guess the riddles, but also find the answer at our food exhibition.
White water,
It will be useful to all of us.
From white water,
Do whatever you want:
Cream, curdled milk,
Butter in our porridge,
Curd for a pie,
Eat, Vanya, friend!
Milk
Very fond of children
Chill in the package.
Chill, chill
Let me lick you once!
Ice cream
Guess who she is
Snow-white, thick?
Whipped cream early in the morning
So that we have ... Sour cream
What are these white grains?
Not grain or snowflakes.
Sour milk - and on time,
We got ...
Curd
It is made of milk
But his sides are firm.
There are so many different holes in it.
Have you guessed? This...
Cheese
We will spread it on bread,
And add to different cereals.
Porridge will not be spoiled for sure
White-yellow pieces.
Butter
Children find and show dairy products that are on display at the dairy exhibition.
What good fellows you are! Coped with the task quickly !! Found all the answers right!
Maybe someone guessed and understood what we are going to talk about today? (About milk and dairy products)
What dairy products have we not mentioned yet? (Kefir, yogurt, yogurt, condensed milk, fermented baked milk, snowball, ... ..)
What kind of milk dishes do the chefs prepare for you in the kindergarten? (Milk soups, cereals, cottage cheese casseroles, coffee drink, milk tea, lazy dumplings ...)
Main part.
Well done, guys, they guessed all the riddles, answered difficult questions.
And now, guys, I'll tell you about the benefits of milk.
Educator's story and talk about the benefits of milk. Show presentation.
Milk was given to us by Mother Nature. Nature is arranged so that newborn children and animals know how and love to drink milk. (Slide 1 The baby drinks breast milk, kittens drink milk).
From early childhood, mothers begin to give their children different dairy products: cottage cheese, cream, kefir, sour cream, yogurt, cheese, butter ... (Slide 2 Photo with dairy products).
Where does milk come from? Who gives it to us? (Cows)
Adults and children know
And it is known to the whole planet
No healthier in the morning -
Drink a cup of milk!
To keep everyone healthy
A cow gives it to us!
Who else? (Goats ...)
It's no secret that cows and goats give us milk. What is the name of cow's milk? (Cow) Goat? (Goat)
There are other animals in the world that give milk. Do you know these animals? (Slide 3)
For example, a horse. Horse milk is used to produce a very healthy drink called koumiss. (Slide 3).
Camel milk - sweet, healthy; residents of Asian regions appreciate and love him very much. (Slide 4).
And where it is always cold, and there are problems with the delivery of fresh cow's milk, deer help people out. The northerners learned to make cheese, curd products, butter from reindeer milk. (Slide 4).
Milk occupies a special place in baby food. Casserole, milk soup, porridge with butter, dumplings, pancakes, condensed milk with pancakes made with milk, and everyone's favorite ice cream - all these children eat with pleasure. (Slide 5).
The most important component of milk is protein. If a person does not consume protein for a long time, this will have a bad effect on his health. Milk contains vitamins, minerals and other useful substances. (Slide 6).
Do not forget, children, about milk. Eat dairy products every day. The most valuable thing a person has is his health.
Children drink milk - you will be healthy! (Slide 7).
Fizminutka
We are tired, stayed too long
We wanted to warm up. (One hand up, the other down, jerkily change
arms.)
Then they looked at the wall,
Then they looked out the window.
Right, left turn
And then vice versa. (Body turns.)
We start squats,
Bend the legs to the end.
Up and down, up and down
Do not rush to squat! (Squats.)
And sat down for the last time
And now they sat down on the chair. (The children sit down.)
Experiments. Experiments. Research.
I invite all of you to the laboratory of miracles! In it we will gain knowledge, we will be friendly with milk!
Miracles with milk.
EXPERIENCE 1. SECRET INK.
How many knows how to write a secret letter or secret message?
Do you want to learn?
With the help of what do we write letters, draw? (Pen, pencil, paper ...)
In the past, invisible ink was used. Under certain conditions, they became visible (Heating, lighting)
Maybe someone guessed what kind of invisible ink we have? (Milk)
Want to write a secret message? Take leaves, cotton swabs or brushes and use milk to draw what you want, and I want to draw my heart, how I love you all.
Now we need our milk to dry and become invisible. At the end of the lesson, we will find out what secret messages you have drawn.
EXPERIENCE 2. What is healthier than COCA-COLA or milk?
To clearly see what we drink, and to conclude that milk or Coca-Cola is healthier, we decided to mix cola with milk. And here's what we got.
What do I have? (Milk and Coca Cola)
What did we do yesterday? (They got mixed up)
What did we do?
CONCLUSION: Milk darkened, turned brown,THE REACTION STARTED, THE MILK COLLECTED, A SEDIMENT APPEARED IN THE FORM OF FLAKES.
EXPERIENCE 3. EXPERIENCE WITH IODINE.
In some factories, milk is diluted with water and starch is added to thicken it. In this case, milk loses its beneficial properties.
And what needs to be done for this?
To do this, add iodine to our milk.
What's up with the milk?
CONCLUSION : COMBINING IODINE WITH STARCH FORMS A BRIGHT BLUE JOINT.
IF WE DO NOT HAVE A BLUE COLOR OF MILK, WHAT DO WE MAKE A CONCLUSION? (IT IS NO STARCH)
WHAT IS THIS MILK? (USEFUL)
EXPERIENCE 4. "BOILING MILK"
There is an expression "MILK Escaped" Does milk have legs? (Not)
Why do they say that?
Milk "runs away" during boiling, it rises upward, and if the pan with milk is not removed from the stove in time, then some of the milk will simply run out of it.
Do you want to see how milk "runs"? We have no stove, no fire, no saucepan to boil milk.
But, we have a scientific laboratory of miracles.
Our experience will require citric acid, soda, and milk.
Let's add soda to the milk, what's going on? Now let's add citric acid.
See what's going on with milk? (It foams, boils)
CONCLUSION : THE REACTION OF SODA AND CITRIC ACID HAPPENS IN MILK. IT IS FOAMING, BUBBLING, DRINKING.
EXPERIENCE 5 "COLORED MILK"
Do you guys like to draw? What are you painting on? (On leaves, in albums, on snow, sand, on asphalt ...)
What do you usually paint with? (Paints, pencils, felt-tip pens, stick, crayons ...)
Did any of you paint on milk? (Not)
Want to try?
There is milk on the tables in plates. Add a few drops of green, red, blue paint to it (with an eyedropper, brush or cotton swab).
Take another cotton swab and dip it in liquid soap. With a stick dipped in dishwashing liquid, touch the milk for literally 10 seconds. Just touching!
And then the most interesting thing begins - magic colors begin to "dance", scattering from a cotton swab. From a magic cotton swab and from a color explosion in milk. When we remove the stick, the paints continue to "dance" and move. The milk starts to move and the paint mixes. A real fireworks in a plate!
Conclusion: We see an explosion of colors. Liquid soap reacts with milk and makes the dyes move, it repels the fat that combines in the milk. This is why skim milk is not suitable for the experiment.
Well, has anyone figured out how to read a secret letter? What did I write to you?
See what I have? (Cloth and iron)
What need to do? (Iron our letter)
CONCLUSION: SOME SUBSTANCES THAT ARE CONTAINED IN MILK BREAK FASTER UNDER THE EFFECT OF THE HEAT, THAN THE PAPER ITSELF IGNITE. THIS CHEMICAL PROCESS IS PRODUCTS OF COMBUSTION. WHEN HEATING MILK SPOTS ON PAPER PROTEINS AND CARBOHYDRATES CHAR AND BECOME VISIBLE.
What did I write to you in my letter?
GOOD MEN!
Reflection.
WHO LIKED TODAY'S EXPERIMENTS, EXPERIMENTS?
Who wants to try with their parents, show what miracles we did today?
What product were we talking about today?
What conclusion can you make about him?
Children drink milk - you will be healthy!
Surprise moment:screening of the cartoon "Smeshariki-Milk bet"
Design and experimental activity in the senior group "Milk"
Kostenko Larisa Anatolyevna, senior educator.Place of work: MKDOU "Podgorensky kindergarten No. 1"
Objective of the project: creating conditions for the development of experimental activities of children in interaction with the family.
Project objectives:
Help children learn that milk is found in many foods.
Build research skills.
To develop children's cognitive interest in research activities, the desire to learn new things.
To develop and improve the cognitive interest of the family in the process of experimenting, establishing a causal relationship, the ability to draw conclusions.
To develop the emotional-value attitude of preschoolers to the world around them together with their parents.
Involve parents in expanding children's ideas about the importance of milk for the body.
To foster the ability to work in a team, the desire to share information, to participate in joint experimental and experimental activities.
Project type: cognitive - research, mid-term.
Project participants: children of the older group; parents of pupils;
senior educator, educator of the group.
Relevance of the project. Milk is an indispensable and irreplaceable product for baby food. In terms of its chemical composition and biological properties, it occupies an exclusive place among the products of animal origin used in the nutrition of children of all age groups. But not all children enjoy drinking milk and eating dishes based on milk and dairy products (cereals, milk soups, cottage cheese casseroles, cheese, buttered sandwiches). Strengthening parent-child relationships in the process of experimental search activities, both in kindergarten and at home.
Problem. Preschool children do not understand the importance of milk and dairy products in the development of the body.
Motivation: Why does a person need milk?
Estimated results:
Children will learn that milk is found in many foods.
Research skills will be developed.
Children will have an interest in research activities, a desire to learn new things.
The cognitive interest of the family will develop and improve in the process of experimentation.
The emotional-value attitude of preschoolers to the world around them will develop together with their parents.
Involving parents in cognitive and research work will help children understand the importance of milk and dairy products in the development of the body.
The ability to work in a team, the desire to share information, to participate in joint experimental and experimental activities in kindergarten and at home is brought up.
Project stages
Preparatory:
- Conducting a conversation with parents "Formation of experimental - research activity of preschoolers in joint activities with the family."
- Familiarization of parents with a corner of experimental activity in a group.
- Collecting information about milk together with parents.
- Selection of works of art about milk.
- Selection of experiments with milk.
- Collection of packages of dairy products for the exhibition.
Basic:
- Excursion to the store "Department of Dairy Products".
- Carrying out GCD "The value of milk in human life."
- Experiments with milk: "Comparison of milk and water", "Mixing milk with other products", "Fermentation of milk", "Rainbow on milk".
Final:
- Decoration of an exhibition of handicrafts from packages of dairy products, made together with parents.
- Making mock-ups of a glass with tubes indicating the composition of milk: fats, proteins, carbohydrates and minerals.
- Competition of fairy tales about milk compiled at home together with parents.
- Registration of the presentation of the project.
Experimental Equipment: Experiments containers, milk, tea, coffee, instant cocoa, water, pictures, tables.
Excursion to the store "Department of Dairy Products"
"Milk is an amazing food prepared by nature itself."
Ivan Pavlov
Tasting of dairy products
Directly - educational activities
"The value of milk in human life"
Milk contains many useful vitamins and substances.
Drink fresh milk to help clear caries.
To keep the bones strong, the head does not hurt.
The mood to be always cheerful.
Exhibition of packages and crafts from boxes of dairy products
Experiments
Experience No. 1 "Comparison of milk and water"
Material: a glass of milk and water.
- What is the difference between milk and water?
Dip a teaspoon into a glass of water and milk.
- In which glass do we see the spoon?
Place a picture behind a glass of milk and water.
- Through which glass do we see the picture?
- Let's smell the milk and water. What can we say?
The water is clear, but the milk is not. Water is odorless, but milk is.
Experience No. 2 "Mixing milk with other products"
"An empty head does not reason: the more experience, the more it is capable of reasoning."
P. P. Blonsky
White water will come in handy for all of us.
Do whatever you want from white water.
Material: a glass of milk, tea, coffee.
Research problem statement:
- Will the milk change color and taste?
Predicting the result and performing the experiment.
Pour tea and coffee into glasses with milk.
- What happens to the milk?
- Has the color, taste, smell changed?
Recording the results of the experiment and conclusion.
Mixing milk with other products changes color, smell, taste.
Experience No. 3 "Fermentation of milk"
Material: a glass of milk, a slice of rye bread.
Research problem statement:
- How to get kefir?
Predicting the result and performing the experiment.
Put a piece of rye bread in a glass of milk and leave it in a warm place for several hours. Let's see what happens to the milk?
Recording the results of the experiment and conclusion.
When you add rye bread to milk and leave it for several hours in a warm place, you get kefir.
Experience 4 "Getting yogurt"
Material: a glass of kefir, jam (any).
Research problem statement:
- What will we get if we add jam to kefir?
Predicting the result and performing the experiment.
Add jam to a glass of kefir and stir well. Let's taste what happened?
Recording the results of the experiment and conclusion.
When you add jam to kefir, we get yogurt.
There is nothing more useful in the world
than milk and a glass of kefir ...
Milk, milk!
We all love milk!
Milk is a wonderful product and, of course, healthy.
It is used to make cheese, cottage cheese, yogurt and kefir.
Milk is very useful
Both for adults and children.
Porridge, yogurt and sour cream
Eat with a large spoon.
To get yoghurt,
It is necessary to put berries in kefir.
Then beat him up.
Now the yogurt is ready!
Experience 5 "Rainbow on milk"
Material: a glass of milk, a plate for the experiment, paints (gouache) yellow, red, blue, detergent, cotton swab.
Research problem statement:
- How to get a rainbow on milk?
Predicting the result and performing the experiment.
Pour milk into a plate. Add red paint to the center of the plate, then blue and yellow. Dip a cotton swab into the detergent and dip it into the center of the plate with milk and paint.
Recording the results of the experiment and conclusion.
When the detergent is added, the paint spreads across the plate in the form of a rainbow.
Results of the implementation of experimental activities:
Project presentation.
The presentation of the project took place in the form of a thematic lesson, which was attended by the children of the group and the teachers of the kindergarten.
Positive results of the project.
During the project, children learned about the importance of milk and dairy products for the development of humans and other mammals. In the course of the project activities, the children increased their speech activity, the ability to compare according to various criteria, draw conclusions, and their interest in learning about the world around them increased.
In the process of experimental activity, children:
Have instilled an interest in research skills.
Developed mental operations.
Stimulated cognitive activity, curiosity.
Activated perception of familiarization with natural phenomena.
Article for the competition "bio / mol / text": Almost always, we take our word for what is written on the food label. The article is devoted to identifying impurities in milk and dairy products and determining their quality at home. With the help of experiments that even a child can cope with!
The editors draw the attention of readers to the fact that this wonderful article was written by a student of the 5th grade, so some simplifications in it are inevitable. But the "biomolecule" nevertheless considered it necessary to correct a couple of inaccuracies :-).
Sponsor of the nomination - a project that brings together professionals and enthusiasts in the field of biology and biotechnology.
The general sponsor of the competition, according to our crowdfunding, was an entrepreneur Konstantin Sinyushin, for which he has a huge human respect!
The sponsor of the Audience Award was the Atlas company.
We decided to research milk and dairy products that we eat and develop a “home laboratory” to determine the quality composition of milk and dairy products. The main objectives of the study:
- study the role of milk and dairy products in healthy human nutrition;
- to reveal empirically the presence of impurities (starch, soda, chalk, water) in milk and dairy products;
- to develop practical recommendations for determining the quality composition of milk and dairy products at home.
In the course of the study, it was assumed that the composition of milk and dairy products may contain impurities that are not declared by the manufacturer and are not provided for by the standard.
Milk is a highly valuable product
The role of milk in healthy human nutrition. Types of milk
Milk is one of the most valuable food products. Milk is superior in value to many other products. Just two glasses of milk a day is enough to meet 30% of an adult's need for protein, 50% for potassium and 75% for calcium and phosphorus.
In Russia, the rate of milk consumption per person per year is set at 325 kg. It is this amount of milk that meets the requirements of a healthy diet. In fact, Russians consume an average of 248 kg, while residents of the Ulyanovsk region consume only 240 kg of milk per year.
The most valuable is considered whole milk- milk without the addition of any substances, including water, with natural fat content, which is different for each animal (from 2.6 to 6%). That is, they milked a ladybug or a goat - and they got this very “correct” milk.
Standardized milk is a product obtained from milk and brought to the required percentage of fat content by mixing this product with milk of a different fat content or with skimmed milk.
Powdered milk obtained by drying ordinary cow's milk at a very high temperature (about 170 ° C).
Reconstituted milk is milk obtained by adding water to milk powder. That is, they took milk powder, diluted it with water - and here it is, reconstituted milk. In some countries, such milk is prohibited for sale, because when dried, potentially harmful substances are formed in it (oxysterols, in large quantities provoking the development of atherosclerosis), beneficial microorganisms die, vitamins are destroyed. In Russia, such milk should be called “milk drink”, not milk.
Types of milk processing
On the way from the cow to the consumer, milk is processed to kill germs and increase shelf life.
It is better to use pasteurized milk for food, as it retains more vitamins and beneficial bacteria.
Starch and other impurities in milk and dairy products
There is a huge variety of dairy products in modern stores. These are yoghurts, cottage cheese and curds, ice cream ...
But in order to maintain your health, it is important to eat quality dairy products. It is no secret that many manufacturers add various food additives to them - for example, starch, soda, chalk, or simply dilute milk with water. To prevent milk from souring for a long time, antibiotics are added to it, which suppress the growth of unwanted bacteria, but at the same time destroy beneficial ones.
The starch is mixed to give milk, cream, sour cream and yoghurts a thicker texture. Starch is natural, which is contained in the cells of vegetables, fruits, cereals, nuts and is safe for the human body. But isolated in its pure form - in the form of a white powder - it is already less harmless: in the gastrointestinal tract, it is more easily broken down to glucose and increases insulin levels faster. And sometimes starch is modified (chemically, not genetically, modified), the properties of which depend on the type of modification: for example, resistant starch (E1442) is even useful - it stimulates the growth of beneficial bacteria in the intestine. In Russia and other countries, it is allowed to use several types of modified starch, but it is better to avoid excessive consumption of any starches.
Figure 6. Experiments in the laboratory at the Ulyanovsk State Agricultural Academy
Three types of milk for baby food were used for the experiments:
- Milk "Krepysh", sterilized, 3.2%.
- Milk "Krepysh", sterilized, fortified, 3.2%.
- Agusha milk, sterilized, 2.5%.
In a Petri dish, 2 ml of all three milk samples were poured. Added 4 ml (ie, twice as much) of alcohol (tinted with "brilliant green" for clarity). The milk protein casein tends to curdle when exposed to alcohol. If the product is of high quality, the liquid will turn into flakes almost instantly (within 3–7 seconds). The more water is added to the food, the longer it will take for this protein to fold — the longer it takes for the flakes to appear (Figure 7).
Figure 7. Study of the reaction of milk protein (casein) to alcohol
The study was carried out in triplicate. The results of the experiments were as follows:
- The flakes formed after an average of 4-6 seconds.
- The flakes formed in 2-3 seconds on average.
- No flakes were formed in any of the three samples.
Conclusion: milk sample # 3 has a reduced protein content, possibly diluted with water. This is Agusha milk, sterilized, 2.5%.
Souring test
We poured the milk into 5 ml tubes (fig. 8). The samples were left to stand for a day at room temperature. The pure product should turn sour, forming a layer of cream on top. If no cream is formed, then the milk has been skimmed. If the milk is not sour, then there is something superfluous in it (possibly an antibiotic).
The study was carried out in triplicate. The results were as follows:
- The layer of cream averaged 1.5 mm per 5 ml of milk.
- The layer of cream was on average 1 mm per 5 ml of milk.
- No cream was formed in any of the three milk samples, the milk did not turn sour during the day.
Figure 8. Sample sedimentation
Conclusions:
- Milk sample # 2 contains a reduced fat content, less than sample # 1, although the label claims the same fat percentage - 3.2.
- Milk sample # 3 contains contaminants that prevent it from souring - possibly antibiotics or preservatives.
Detection of soda and chalk impurities in milk
So that milk does not spoil for a long time, manufacturers add chalk or soda to it. It is possible to reveal these impurities in milk (unless the manufacturer has normalized the pH level of the milk after their addition) by adding acetic acid - the milk will instantly turn sour (curdled), and the appearance of foam will indicate the presence of chalk or soda in the milk (Fig. 9).
Figure 9. Detection of soda and chalk impurities in milk
During the experiment, when acetic acid was added, milk curdled in all three samples (Fig. 10).
Figure 10. Results of detection of soda and chalk impurities in milk
Conclusion: milk samples do not contain chalk and soda impurities.
To ensure the correctness of our experiment, we added a small amount of baking soda to the milk and then acetic acid. Foam has formed (fig. 11). The presence of chalk in milk also makes itself felt in foam.
Figure 11. Evaluation of the reliability of the experiment to identify impurities of soda and chalk in milk
Conclusion: the results of the experiment on the identification of impurities of soda and chalk in milk can be considered quite reliable. It should be noted that the reliability of the experiment will be absolute if, after adding impurities, the milk pH is brought to the initial level.
Determination of the presence of soda and chalk impurities in milk in laboratory conditions
To identify soda in milk, test strips were taken. These strips were dipped in milk and the acidity of milk was determined by comparing the color of the strip with a standard scale (Fig. 12).
Figure 12. Determination of the presence of soda and chalk impurities in milk in laboratory conditions
6-7 units are considered the norm. The results of the experiment showed the following:
- sample no. 1 - pH = 7 (the test strip changed color to slightly orange);
- samples nos. 2 and 3 - pH = 6 (the test strip changed color to bright yellow).
Conclusion: Soda impurities were not found in any of the samples.
The reliability of the experiment was checked by adding soda to the milk. Having dipped the test strip in milk with soda, we saw a color change to green, which corresponds to an alkaline medium (pH = 9) (Fig. 13).
Figure 13. Checking the purity of the experiment to identify impurities of soda and chalk in milk
Conclusion: the results of the experiment on the identification of impurities of soda and chalk in milk can be considered quite reliable. As in the previous experiment, the purity of the experiment will be absolute if, after adding impurities, the milk pH is brought to the initial level.
Conclusion
In the course of the experiments, our hypothesis was confirmed. In some samples of milk and dairy products, impurities not declared by the manufacturer were found.
We have developed a set “Home milk laboratory” for the examination of dairy products at home, which consists of reagents and instructions for use.
The detection of starch impurities in milk is carried out by adding 2-3 drops of iodine to milk (2 ml). The presence of impurities is indicated by a change in the color of the milk to blue or violet.
To detect a low protein content in milk, add 4 ml of alcohol to 2 ml of milk. The reaction is taken into account by the rate of curdling. High protein milk is curdled instantly. The low protein content of milk can be caused by dilution with water.
To detect milk with a low milk fat content, a sedimentation test is carried out during the day at room temperature. The reaction is taken into account according to the degree of sour milk. If there is no cream layer, then the milk is skimmed. When the souring process is slowed down or absent, antibiotics or preservatives are added to the milk.
To detect the impurities of chalk and soda in milk, add acetic acid (2-3 drops) to 2.5 ml of the sample. The appearance of foam indicates the presence of impurities.
Another method of detection in soda milk is based on the use of test strips (sold in a pharmacy). The reaction is detected by changing the color of the test strip and comparing it with a reference scale. The acidity of 6-7 units is considered the norm. Exceeding the norm means the presence of soda impurities in the milk.
The developed set "Home laboratory of milk" can be used in life by a wide range of people.
I would like to express my gratitude to my mentors for their help in conducting the research and preparing the materials: the teacher of the Oktyabrskiy Rural Lyceum Loktina Raisa Vasilievna and the scientific consultant Vasilyeva Yulia Borisovna, Candidate of Veterinary Sciences, Associate Professor of the Department of Microbiology, Virology, Epizootology and Veterinary and Sanitary Expertise of the Ulyanovsk State Budgetary Educational Institution of Higher Education.»;;
