There are many minerals that are mined from the depths of the Earth. All of them are extremely important because they allow you to obtain the necessary comfortable life things. They make it possible to heat homes, eat, move through space at high speed, make wonderful decorations, and much more. During research, scientists discover very Interesting Facts about minerals that allow you to learn more about the secrets hidden in the underground depths.
- Coal is the most common fossil used as fuel.. Few people know that from a 20-meter layer of peat under pressure only a 2-meter layer of coal is formed. If a similar layer of dead vegetation lies at a depth of 6 km, then the coal seam will be only 1.5 m deep.
- Malachite is a semi-precious stone used to make stunning jewelry. The largest stone that was recovered weighed 1.5 tons. Having discovered such a treasure, the miners presented it to Empress Catherine II. Later, the stone became an exhibit at the St. Petersburg Museum of the Mining Institute.
- Obsidian – volcanic glass. This material has high density. It is formed under the influence of very high temperatures during an eruption of magma. Archaeologists were able to find evidence that the first surgical instruments were made from this material.
- Today, every person knows what oil is and how it occurs. The first theory of the origin of this mineral suggested that oil is nothing more than whale urine. Black gold began to be mined by collecting it from the surface of reservoirs. IN present time Oil is pumped out from the depths of the Earth using pumping stations.
- Scientists continue to present new interesting facts about metals. So, gold has been recognized as one of the most flexible metals. It is even used to make sewing threads. One ounce of gold can produce a thread about 80 km long.
- Iron ore has been used by humans for a long time. Archaeologists have been able to prove that The production of the first objects from iron ore dates back to the 1st-13th centuries. BC. The people of Mesopotamia were the first to use this mineral.
- Sodium chloride or salt is mined in the greatest number
. Despite the necessity of this mineral for human life, only 6% of it is used as food. To sprinkle roads during icy conditions, 17% salt is used. The lion's share This mineral is used by industry and accounts for 77% of all production.
- Extraordinary interesting story has the queen of metals – platinum. In the 15th century it was discovered by Spanish travelers who arrived on the shores of Africa. After studying this material, its refractoriness was discovered. For this reason, platinum was considered unusable and was valued below the value of silver.
- Silver has long been famous for its bactericidal properties.. More warriors ancient Rome used it for treatment. If a person suffered serious wounds in battle, then healers covered the injury sites with silver plates. After such procedures, the wounds healed quickly and without any complications.
- Marble has been used since ancient times for finishing rooms and creating various decorative elements.. This is due to the amazing hardness of the material and its wear resistance. Marble retains its original appearance for 150 years even when exposed to temperature, moisture or sunlight.
- Diamonds are recognized as the hardest minerals mined from the depths of the earth. In this case, a blow delivered by a hammer with great strength, can break the stone into small pieces.
- Uranium is a metal that is considered one of the heaviest chemical elements
. Uranium ore contains a negligible amount of pure metal. Uranium has 14 stages of transformation. All elements that are formed during the transformation are radioactive. Only lead, which is the final stage of transformation, is considered safe. It will take about a billion years to completely convert uranium into lead.
- Copper is the only metal that does not produce sparks when rubbed Therefore, copper tools can be used in places where there is an increased risk of fire.
- You can constantly learn a lot about soil. Thus, scientists studied a common mineral resource - peat. They identified peculiar threads in it that are extremely durable. This discovery found its application in light industry. The first products made from peat threads were introduced in Holland. Peat is an excellent preservative. It preserves the remains that fell into it thousands of years ago. This allows scientists to learn interesting facts about the skeleton of a person who lived long before our days, and to examine the remains of already extinct animal species.
- Granite is known as a durable building material. But not everyone knows that it conducts sound much faster than air. Passing speed sound waves on granite 10 times more than passing through airspace.
Municipal state preschool educational institution
Iskitimsky district Novosibirsk region
kindergarten "Rodnichok" Lebedevka
Summary of GCD for older children
"In the world of minerals"
Completed by: teacher
first classification category
Vdovina S. G.
Target: Formation of local history curiosity, cognitive interest to the surrounding world and the world of inanimate nature of the native land.
Tasks:
- Introduce children to the properties of minerals (sand, clay, coal, chalk), compare how they differ.
- Develop the ability to install cause-and-effect communications.
- Bring up careful attitude to natural resources.
- Continue to introduce the profession of geologist.
- Strengthen skills research activities; the ability to identify the properties and qualities of proposed materials through experiments.
- Establish safety rules when conducting experiments.
- Continue to introduce the riches of our native land.
Progress of the lesson:
Children enter the group and greet the guests.
Educator: (On the table there is equipment for geologists: a compass, a hammer-pick, a map, a rope, pencils, a notebook and containers for samples.) Look, guys, what kind of equipment is on the table
Children: Equipment for geologists.
Educator: Guys, tell me who are geologists?
Children: Geologists are people who study and search for minerals.
Educator: What are minerals?
Children: Minerals are natural resources, which people extract from the depths of the earth or from its surface and use in their households.
Educator: Guys, let us be geologists today and go on an expedition to a mineral deposit.
We collect a backpack and what is needed on the expedition.
Educator: Ready.
Educator: Will we become geologists?
Children:
Everyone will be proud of us.
Yes! Yes! Yes! (Clap overhead)
What awaits us ahead?
High mountain (show with hands)
Stormy river (showing with hands)
You can’t get around it (they stomp their feet)
You can’t swim through it (“they’re floating”)
You can’t fly past it (“wings”)
We need to go straight.
We can do anything, we can do anything
And we will achieve our goal.
Yes! Yes! Yes! (Clap overhead)
Here is our first obstacle. There is a stormy river running here, we need to carefully walk across the bridge and not fall. (Children walk across the bridge. And they see a poster on the easel “Chernorechensky Quarry”)
Educator: Guys, who can tell where we came?
Children: To the Chernorechensky quarry (or to the chalk deposit)
Children: They mine chalk here. Chalk is a type of limestone.
Educator: We select a sample and move on. Our next obstacle is the tunnel.
.(Children walk through the “tunnel”. And they see a poster of the “Yelbashinsky quarry” on the easel)
Educator: Guys, who can tell where we have come now?
Children: To the “Yelbashinsky career”
Educator: What do they get from this quarry?
Children: Sand and clay. Sand is mined on the banks of the Berd River.
Educator: We select samples and move on.
Our next obstacle is a “swamp.” (Jumping on two legs over bumps, through a swamp.)
And they see a poster on the easel (“Gorlovsky cut”) Educator: Guys, who can tell where we have come now?
Children: To the “Gorlovsky cut”
Educator: What is being mined at this mine?
Children: Coal.
Educator: We select a sample and go to the laboratory.
Why are we going there?
Children: To research and conduct experiments with minerals and find out where they can be used.
Let's go back. And we go to the laboratory.
Educator: Here we are in the laboratory. Take off your backpacks. Take out samples and place them on the table. Put on your aprons and I'll lay out the samples.
Guys, remember what rules must be followed when conducting experiments.
1. Listen carefully to an adult.
2. Do not put anything in your mouth or try it.
3. Don't shout or make noise.
4. Special substances can only be used by adults, and children should watch.
Educator: Guys, guess the riddle and we’ll experiment. (The teacher makes a riddle about clay. Ask any child to tell about clay. A story about clay.) Tell what icon clay is indicated on the map.
Guys, listen to the next riddle.
(The teacher makes a riddle about sand.)
Right. This is sand. (A child’s story about sand) Tell me what icon indicates sand on the map.
Experiment with sand and clay.
Equipment: plastic bottles according to the number of children, water in a decanter, sand, clay.
We cut plastic bottles upper part We turn the bottles over and insert them into the second part. Pour sand into one bottle and clay into the other. And pour water equally.
We observe whether water passes through sand and clay.
Conclusion: Sand passes water well, but clay does not. It becomes limp and sticky.
Listen to the next riddle.
(The teacher makes a riddle about coal.)
That's right, it's coal. (Descriptive story for children about coal.)
Educator: You said that coal is hard, but if you hit it with something heavy, what will happen to it?.. Let's see what happens to it. (We put coal in a napkin and hit it with a hammer. It crumbled, which means the coal is hard but brittle.) Tell me what icon is used to indicate coal on the map?
And the last riddle. (The teacher makes a riddle about chalk.) Descriptive story children about chalk. Tell me what icon the chalk is shown on the map.
Guys, chalk can still get angry, do you want to check? Take a pipette, fill it with lemon juice and drop it onto the chalk. What happened?
Children's answer.
Conclusion: (children answer)
Guys, let's go to our map. You were such a great guy today, share your impressions of the trip. (children's answer) This is a map of the Novosibirsk region. Today we selected samples and conducted experiments with them. You told me a lot about minerals. Name them (coal, chalk, clay, sand.) These minerals are mined in the Iskitim region. They are indicated by icons on the map.
Nadezhda Shesterneva
Educational lesson “Minerals” in the preparatory group
Preliminary work
1. Looking at illustrations, reading "Tales of mineral» according to F. Krivin;
2. Observations during a walk, experiments, creative tasks;
3. Educational games “Define what sign”, “Determine by touch”, with diagrams and others;
4. Conversations on the topic « underground treasures Amur region» .
Material:
1. Cards - symbols mineral;
2. Map of the Amur region;
3. Rock samples: clay and sand (glasses with samples for each child);
5. Glasses of water;
6. Sticks or twigs.
Progress of the lesson:
A game "Not really"
The teacher makes riddles about objects, and the children guess, classifying objects according to scheme: Natural world or plant, living or not Live nature etc.
One of the clues is minerals. The teacher asks why they are called that, then invites each of the children to take a card and determine which one. mineral resource indicated on the card.
Questions for children:
1. Tell me how sand, clay, coal, building stone are used?
2. How can you call them in one word? What else can you call it? (treasures of the earth, treasury of the earth, etc.);
3. People, what professions they work in minerals? (geologists, miners);
4. What do geologists do? (explore the subsoil, study stones, go on an expedition);
5. What do miners do? (work in mines, extract coal).
Educator:
Now look at this picture. It shows a map of the Amur region. Select cards with mineral resources of our region. (children choose from a variety of cards with symbols mineral, only those that we have in our region.
You see, even though our region is small, it holds so much wealth! This includes coal, iron, gold, clay, sand, building stone, etc.
Now let's imagine that you and I are researchers and we have our own scientific laboratory. We're closer Let's get acquainted with such minerals as clay and sand. Quietly go to the tables, we will conduct experiments.
Using a magnifying glass, let us carefully examine what sand consists of (very small grains - grains of sand, what do grains of sand look like? They are very small, round (white or yellow depending on the type of sand) Are these grains of sand similar to each other? How are they similar and how are they different?
Now consider a piece of clay in the same way. Are the same particles visible in the clay? In sand, each grain of sand lies separately, it does not stick to its neighbors, but in clay there are very small particles stuck together.
Carefully pour water into a glass of sand and touch it. What has he become? (damp, wet). Where did the water go? She climbed into the sand and "cosy" nestled between grains of sand. Let's try "plant" stick in wet sand. Which sand does it sink into more easily, dry or wet? Then pour some water into a glass with clay. Do we watch how the water is absorbed, quickly or slowly? Slowly, slower than in sand, some of the water remains on top of the clay. Place the stick in wet clay. It is easier to plant a stick in wet clay than in dry clay.
Conclusion
We have looked at and conducted experiments with sand and clay, but what do you think, where are these used? minerals? (in construction) and where are they located? (in an underground quarry) In the world mineral there are many other amazing things. We will talk about them with you at the next classes.
Age: middle group (4-5 years)
Integration educational areas: « Cognitive development» , "Social and communicative development" , « Speech development» , "Artistic and aesthetic development" , "Physical development"
Tasks:
- Expand children's understanding of inanimate nature (Socio-communicative development)
- Continue to introduce professions - miner (Cognitive development)
- Expand children's understanding of the properties of stones and their purpose (Cognitive development)
- Continue to discuss information about objects that go beyond the usual immediate environment (Speech development)
- Promote curiosity (Speech development)
- Give the concept of new words - the bowels of the Earth, minerals, precious stones. (Speech development)
- Develop music listening culture skills (Artistic and aesthetic development)
- Improve motor skills (Physical development)
Types of children's activities: cognitive-research, communicative, motor, musical.
Methods and techniques: visual - illustrations, viewing a collection of natural stones, viewing photographs of precious stones, verbal - conversation, story, riddles, practical - listening to music.
Materials and equipment: illustrations, a collection of natural stones and photographs of precious stones, a disk with the sounds of the sea.
Preliminary work: reading a Khakass fairy tale "Why did the mountains fall silent" , educational games “Find the same stone” , "Find out by touch" , family viewing cartoons "Dwarves and the Mountain King" , "Silver Hoof" .
Logic of educational activities:
Educator: Guys, we have accumulated in our group whole collection stones. I brought part of this collection from the seaside, where I vacationed in the summer; many of you were also at the seaside and brought stones as a souvenir of your vacation and brought them to kindergarten. How many of you have been to the sea? What did you see there? (children's answers). Do you want to hear the sound of the sea? Now I will turn on the music, you will close your eyes, listen carefully and imagine the picture that it tells you. (Children listen)
What did you hear, what pictures flashed before your eyes? (Children's answers).
Let's listen to the music again, do you hear how the sea roars, how the waves, running onto the shore, roll stones from place to place, how they knock against each other?
Educator: On the tray are sea stones, take them in your hands, what do they feel like? (flat, round, smooth).
Educator: Yes, that’s how they were made sea waves. IN sea water the stones crash against each other, the water breaks off their edges. And they become smooth, smooth - without a single corner. Now take the pebbles from the other tray and place them next to the sea ones. Touch them, what can you say about them? What are they? (rough, uneven, with sharp corners).
Educator: So what is the difference between sea and river pebbles? (Children's answers) Compare them by strength (children test stones for strength and draw conclusions about their hardness).
Educator: Do you know where the stones came from? (children's assumptions). Our planet, the vast, beautiful Earth, keeps many secrets. Do you want to get acquainted with what is stored inside the Earth?
Underground exists the whole world! And what a one! Look (the teacher offers illustrations depicting underground caves, stalactites, stalagmites). Where do you think the caves came from, how were they formed? (Children's guesses)
These caves were made by water. I can’t even believe that such soft and gentle water can be so strong and so powerful. It can wash and wash away entire halls of caves among the rocks in the mountains.
Educator: (pay attention to beads made of natural stone, photo of precious stones)). Look at the beautiful shapes, the play of colors, the lines in the drawing. It was Mother Earth and her assistant water who created such miracles. Rings and beads are made of precious stones. These stones are very beautiful. They shine and shimmer in different colors. Such stones are rare in the ground and are expensive, which is why they are called precious. Admire it sun stone (the teacher demonstrates amber, the children look at it) What can you say about him? Want to touch this gem and learn its history?
Educator: Amber is a fossilized resin. Millions of years ago, some species of coniferous trees healed their wounds with resin: whether a branch broke off or the bark of a tree was split off, resin immediately began to be released, which closed the wound. What do you think will happen if an insect lands on a sticky, resinous surface? (It will stick), resin - sticky, viscous. In the resinous puddles, all sorts of small animals and birds left their traces: some fluff, some a feather, some a hair. You can also see air bubbles or raindrops in amber. It took a lot of time for the resin to turn into amber. Coniferous trees grew old and fell. They were covered with earth, under the heavy layer of earth that had piled up, the resin hardened like stone and became amber. How did amber get into the sea? A river flowed through the forest, amber was a light stone, and the waters of the river washed it out of the ground and carried it with them. The river flows into the sea. And the amber treasure ended up in the sea. The storm and waves carried the stone ashore. How beautiful jewelry give them for birthdays.
Educator: (shows a piece of coal) Guys, do you think this stone can serve as decoration? It may be ugly and get your hands dirty, but its value and benefit to humans is very great. This coal. It burns well and is used as a fuel to generate heat and electricity. Coal is stored underground, which is why it is called a mineral. How do you understand the expression "minerals" ? (Fossils - because you need to look for and dig them out of the ground, and useful ones, because they bring great benefits to people). Why is coal called hard coal? (because it's hard) In addition to coal, the Earth's storehouse contains many more minerals, all of which are inanimate. We'll talk about them next time. Are you interested in learning how coal is mined? Then we will have to go to the mountains.
Physical education minute
We'll go right now
And then let's go left
Let's gather in the center of the circle
And we’ll turn around on the spot
We'll sit down quietly
And let's lie down a little
We will rise quietly
And let's jump lightly.
Let our feet dance
And they clap their hands.
Let's turn right
And then we'll go straight
We walked and reached the mountains.
Educator: Coal is mined in quarries if it lies shallow, or in mines if the reserves are deep. (the teacher’s story is accompanied by a display of illustrations). People who mine coal are called miners, miners (Why?). The work of miners is very difficult and dangerous. Everyone respects miners for their strength and courage.
Educator: Today we took a trip through the depths of our Earth, learned about minerals. Who will be the first to guess the riddle: “It’s an unsightly stone, it lies in the ground in a layer, in order to lift it up, you need to visit the mine. There are lights underground - these are miners in the mine. Hammers are used to beat off this very necessary stone. (Coal)
What are minerals? (Children's answers). What minerals did you learn about today? (Children's answers). What are the names of the stones from which jewelry is made? (Children's answers).
Think about what icon you will use to represent coal, amber (the teacher invites the children to draw icons)
Summary of GCD for children preparatory group in natural science
"Human Use of Minerals"
Goals and objectives: introduce children to minerals and their role in human life. Learn to recognize symbols fossils. Develop the desire for search and cognitive activity, mental activity, the ability to observe, analyze, and draw conclusions.
Integration of educational areas:cognition, communication, health, artistic creativity.
Expected results.Have elementary representations about minerals and their use.
Previous work:Conversations on minerals. Examination of a map of Russia with marked mineral deposits (oil, gas, coal, gold, salt, sand). Reading books: Felix Krivin’s “Tales Extracted from Under the Ground”; Bella Dijour “From the foothills to the peaks”; Victor Levin “Here it is, plastic”; Konstantin Lagunov “How they searched for Tyumen oil”; encyclopedia “Why” articles:
- What is underground wealth;
- The Tale of Coal;
- What is iron made of?
- What is stronger - iron or steel?
- What's inside the mine?
- Where does gasoline come from?
Material: exhibition of books read. Didactic game“guess and name” (pictures depicting various items and mineral resource marks). Crossword "Fossils". Chest with double bottom, and there are sweets in it.
On the teacher's desk:a glass of water, a bottle of recycled motor oil (instead of gasoline), a bird feather, a piece of coarse salt, a plate of fine salt, a wooden mortar.
On the children's table:3 transparent plastic glasses, a teaspoon, a plate of coarse and fine salt, a plate of multi-colored bath salts, napkins. For each child an apron and sleeves.
Progress of direct educational activities
The teacher and the children look at the stand with books they have read about minerals. Conversation about what you read.
There is a knock on the door. Dunno enters.
Dunno. Hello adults and children. I'm in big trouble.
Educator . Hello, Dunno. What's happened?
Dunno. My friends from Sunny City are going camping again. Look for some is-ka-e-my or is-po-ka-e-mine, ugh, you don’t remember. But they don’t want to take me.(crying)
Educator . First, they look for fossils. Why don't they take you with them? What have you done, Dunno, again?
Dunno. Yes, they say: “You, Dunno, know nothing. And again you’ll mix something up!” And they gave me a real exam, asking various questions and riddles. But I couldn’t answer them. They gave me a week to find answers to them and gain more intelligence.
Educator. What riddles did they tell you? Maybe our children can help you solve them?
Dunno. Really, can you help? I wrote them down in my notebook.
Educator. We'll try. Read to us
Dunno reads riddles:
- If you meet me on the road,
Your feet will get stuck,
And make a bowl or vase -
You'll need it right away.
Children. Clay.
Dunno. And I said - dirt.
- The kids really need him,
He's on the paths in the yard,
He's at a construction site and on the beach,
It's even melted in the glass.
Children. Sand.
Dunno. And I said stones.
- He won't run without her
No taxi, no motorcycle.
The rocket won't rise.
Guess what it is?
Children. Oil.
Dunno. And I said - a man.
- It was cooked for a long time
In a blast furnace.
To make from steel:
Machine tools, cars and keys.
Children. Iron ore.
Dunno. And I said - cabbage soup.
- It's black and shiny
Real assistant:
It brings warmth to homes,
It makes the houses light.
Helps melt steel.
Making paints and enamel.
Children. Coal.
Dunno. How, children, do you know everything?
Children say what they know from the books they read and from the stories their teachers tell them.
Dunno. What about clay, coal, sand and fossils? After all, fossils are chests of gold and silver that pirates hid.
Educator. No, Dunno, during our lesson we wanted to talk about minerals. Sit down and listen.
The children and Dunno sit down at the tables. Every child has a didactic game on the table “Guess and name."
The teacher says:
When they say: “Underground riches”, “Treasures of the subsoil”, “Storehouses of the earth” - we're talking about about minerals. If we managed to collect all the buried treasures with gold, silver, and precious stones, then in comparison with the riches that nature itself has stored, our finds would be a mere trifle. You can do without chests, caskets, and treasure chests. But without minerals, people would have a bad time.
Once upon a time, a long time ago, there was very little on earth. There were no kettles, pencils, bicycles, or televisions. Well, since there was nothing on the ground, we had to extract it from underground.
First they began to mine teapots, frying pans, keys, and then steam locomotives and ships..., airplanes and starships. Spaceships fly into space, but they were mined from underground! The truth is not in finished form. You won’t even find a simple nail in its finished form underground, unless you bury it there.
Why are they called useful? And why fossils?
That's right, because we have to dig a lot of ground to get what is useful for us on earth.
To make glass and make a glass, you need a special...(Children are sand). And this... To make the soup salty, you need(Children are salt). And this... (Children are a mineral resource).To make a porcelain soup bowl, you need a special...(Children are clay). And this... (Children are a mineral resource).
And so - no matter what.
Children, what other minerals do you know?(Children call).
Dunno. Oh, how interesting. Thank you for teaching me.
Educator. Dunno, but minerals are designated with certain signs. And our children know some signs.
Children one by one put up and name the signs.
Educator. Now we'll play a game"Guess and name."You have pictures on your table depicting different objects; next to the picture you must put signs of the fossils from which they are made.
The children are laying them out. And Dunno approaches the children and asks why they put certain signs. The teacher and Dunno praise the children. Dunno offers to play. The children get up from the table and go out to the middle of the hall.
A physical education session is held:
Here's Dunno's exercise.
Do it in order.
Quickly stand up, smile,
Pull yourself higher, higher
Well, straighten your shoulders,
Pick it up, let it go.
Hands touched knees.
They sat down and stood up, sat down and stood up.
I hope you are not tired?
You need to stand up more freely
And breathe easier.
Let's spread our legs wider,
As if dancing - hands on hips.
Left, right.
Left, right.
It turns out great. Well done!
Educator. Dunno, but our children really love solving crossword puzzles. Look at this.
(While the children are doing physical exercises. Take a minute and solve the crossword puzzle; the assistant teacher prepares the tables for the experiments).
- How to call it in one word: oil, coal, gas...(fossil)
- They don’t eat it and they don’t eat much without it.(salt)
- The layer of earth that is used to make glass(sand)
- He runs along the board.
Does the right thing
I decided, I peed,
Crushed and disappeared(chalk)
- Liquid fuel minerals(oil)
Dunno. And we in Sunny City also love to solve crosswords. You need to write it down and then invite your friends to solve it. They will be surprised that I know this now!
Educator. Dunno, children, come to the table, I’ll show you something. You already know what oil is needed for and what is made from it ( children call ). And tell me what she is like (children - black, oily, smells bad...). Oil is a mineral. But oil, like other minerals, must be handled with care. And why?(children's answers ). Right! If oil gets into the sea or lake, then one will float on the surface of the water and many animals, birds and plants will die from this. And if the oil catches fire, it will be very difficult to put out such a fire. Look, I have some oil(the teacher invites the children and Dunno to smell). If I pour some oil into a glass of water, see what happens. Oil will float on the surface of the water. Now I’ll take a bird’s feather and put it in a glass. Oil remained on the feather. And, as we told you, this is very dangerous for birds. They die from this. This means that minerals must be handled very, very carefully.
And I still have what I have. What is this stone? Yes, this is table salt. Salt is also a stone. That's why it's called stone. And we use table salt in cooking. It is mined in the mountains, in special mines. Then they clean, crush, package and take it to the store where we buy it. They sell it not in the form of a stone, but already crumbly and in bags, it can be large and small... and for this, as I already said, it is crushed. (The teacher shows how small pieces can be separated from a large piece). In factories this is done with large crushing machines. And then they grind it with special millstones. That’s why we get fine salt, or, to put it correctly, finely ground salt.(The teacher shows in a wooden mortar how a piece of salt produces first coarse salt and then fine salt).
The teacher invites the children to put on aprons and sleeves and sit at their tables.
Educator. There are glasses of water on your tables and coarse and finely ground salt in plates. Let's do some experiments.
1 experience. First, dissolve coarse salt in water.
2 experience. Now let’s dissolve the fine salt.
Which one dissolved faster? Correctly fine salt dissolves faster, so housewives often use finely ground salt.
Shops and pharmacies also sell special sea salt and bath salts. But these are different salts and cannot be used for food. Sea salt, many people gargle when they are sick. How nice it is to take a bath if you add special salt to it. Yes, it still happens different color, depending on the herbal infusions added to them, it still smells nice.
3 experience. The teacher distributes plates with multi-colored salt. Let's dissolve it in water and see what happens. Let me remind you once again that this is bath salt and should not be eaten!
Dunno. How amazing! I liked it so much! How many interesting things did I learn? That I want to give you my favorite stones. Really beautiful! Just a treasure!
Educator. Dunno, I have a magic chest. Let's put your pebbles in the chest and see what happens. (Dunno puts it down). Now let's say it together magic words: "CRABLE, CRABLE, BOOM..."
The teacher opens the chest, and there are candies there.
The teacher and Dunno are handing out candy. Dunno says goodbye and leaves.