I don't know what you mean by natural science. I think natural science knowledge refers to knowledge in biology, physics, chemistry and mathematics, that is, non-historical knowledge, that is, literary knowledge. You should consider the characteristics of this knowledge. What are the characteristics of this knowledge that are suitable for children to learn and arouse their interest? The so-called children refer to children before primary school (except infants). You can do this:
Take advantage of subtle environmental influences, such as planting a few pots of flowers at home, and guide children to observe when flowers grow new leaves and what new changes there are every day. You can also raise two pots of the same flower at the same time and put them in different environments so that children can observe and compare the growth of the two pots of flowers. You can take your children to the zoo when you are free. Let the children observe these animals. After the game, you can communicate with your children about the physical characteristics of each animal and their diet. Why are there these characteristics? At this time, you can guide at the right time. Why is the giraffe's neck so long? Because many animals on land eat grass on land in the process of evolution, and the leaves on trees are lush, they always stretch their necks to eat the leaves on trees. At the same time, it is easy to find the enemy's harm, which gradually evolved into this. "Explain the knowledge of physics, such as what physical phenomena are encountered in life. etc
2. natural science tips 100 Q, will it?
1. If you eat spicy food and think it will kill you, just put a little salt in your mouth, hold it, spit it out and rinse your mouth, so it won't be spicy; ? 2. Yellow teeth, you can chew peanuts in your mouth and brush your teeth for three minutes, which is very effective; 3. If there is a small area of skin damage or burns, immediately apply a little toothpaste to stop bleeding and relieve pain; ? 4. Always leave ugly tea stains in the cup filled with tea, and wash it with toothpaste, which is very clean; ? 5. Open your mouth slightly when you look up at the eye drops, so that your eyes will not blink; ? 6. If there is an ulcer in the mouth, stick it on the ulcer with vitamin C, and it will basically be fine after the ulcer dissolves; ? 7. Small dust enters your eyes, close your eyes and cough a few times, and the dust will come out by itself; ? 8. After washing your face, gently apply some fine salt on both sides of your nose with your fingers, and then rinse with water, so that blackheads and acne will be removed and pores will become smaller; ? 9. When you have just been bitten by a mosquito, it doesn't itch when you apply soap; ? 10. If the throat and gums are inflamed, cut the watermelon into small pieces at night and eat with salt. Remember that it must be at night, when the symptoms will be relieved and the next day will be fine; ? 1 1. The hair dryer blows at the label, and when the glue of the trademark is hot, the label is easily torn off; ? 12. If you are afraid of wrinkling when traveling with clothes, you can roll up everything; ? 13. Drinking vinegar when burping will get immediate results; ? 14. Eat something that smells bad, such as garlic and stinky tofu, just eat a few peanuts; ? 15. Treat cough, especially dry cough. Before going to bed at night, fry eggs with pure sesame oil, add a little more oil, and don't put any seasoning. Sleeping in hot weather and eating for several days have obvious effects; ? 16. MM with long and thick wrists cannot wear thin bracelets. You should put a plastic bag on your hand and wear a bracelet. It's very easy to wear and won't hurt your hands. Take it off in the same way; ? 17. Chestnut skin is difficult to peel. Peel off the shell first, then turn it in the microwave oven, take it out while it is hot and rub it, and the skin will fall off; ? 18. When arranging flowers, drop a drop of detergent in the water for several days; ? 19. Steam walnuts in a pot for 10 minutes, then take them out and break them in cold water to take out the complete peach kernels; ? 20. Put the shrimps in a bowl, add a little salt and edible alkali powder, rub them with your hands for a while, then soak them in clear water, and then rinse them with clear water, which will make the fried shrimps transparent as crystal, refreshing and delicious; ? 2 1. When frying meat, first soak the meat in baking soda water for more than ten minutes, then pour out the water and try it again. It will be tender and smooth when fried; ? 22. Soaking the remaining tea leaves in water for a few days and then pouring them on the roots of plants can promote the growth of plants; ? 23. Dry the remaining tea leaves and smoke them in the toilet or ditch, which can eliminate the stench and drive away mosquitoes and flies; ? 24. uncooked rice re-cooking method: you can use chopsticks to tie some holes in the rice that go straight to the bottom of the pot, sprinkle a little yellow wine and stew it again. 25. If it's just a noodle clip, turn the noodles to the middle and simmer; ? 26. Clever removal of greasy screen windows: Put the cigarette butts left after washing clothes and smoking in water, and use them to clean glass windows and screens after dissolution. The effect is really good; ? 27. As long as you put a small piece of chalk in the jewelry box, you can keep the jewelry shiny; ? 28. Self-adhesive traces on the surface of tables and bottles can be wiped with wind oil essence; ? 29. Always carry a small dry battery in your bag when you go out. If the skirt is charged with static electricity, wipe the battery positive electrode on the skirt several times to remove static electricity; ? 30. No matter where your shoes rub your feet, you should apply a little white wine to the place where your shoes rub your feet to ensure that you don't rub your feet. 3 1. When mixing vegetables, if you have to blanch, you'd better make full use of the water for blanching good dishes.
If you cook jiaozi, you can put a proper amount of water in the meat stuffing, which not only ensures the nutrition, but also makes the dumpling stuffing delicious and fragrant. ? 32. In summer, feet are prone to sweating. Soaking feet with light salt water every day can effectively deal with sweaty feet; ? 33. Sunbathing after swimming in summer can prevent diseases such as skin strain; ? 34. In summer, pillows are prone to damp and mildew, and frequent contact with pillow cores is good for health; ? 35. Eat more wet spleen such as glutinous rice porridge, which can prevent heatstroke and damp; ? 36. Anti-insomnia: Talk less before going to bed, avoid drinking strong tea, don't use your brain before going to bed, and wash your feet with hot water and vinegar; ? 37. Honeysuckle has the effect of dispelling wind and dampness. Honeysuckle can be mixed with honey to relieve summer heat after being decocted in water to cool the juice; ? 38. Drinking tea after eating too greasy food can discipline nerves and promote fat metabolism; ? 39. Lack of sleep will make you stupid. You need to sleep for eight hours every day. Having a nap habit can delay aging. ? 40. Hands tend to become dry and rough. Soaking your hands in vinegar for ten minutes can protect your skin. ? 4 1. Wipe the mat in summer, and wipe the mat with water dripping from flower dew, which can keep the mat fresh and clean. Of course, it is best to wipe along the grain of the mat, so that the toilet water can penetrate into the grain gap of the mat, so that the cool and comfortable feeling will last longer; ? 42. Eating more acidic fruits and vegetables such as tomatoes and citric acid for breakfast is beneficial to nourishing the liver; ? 43. When washing your hair or taking a bath, adding five or six drops of toilet water to the water can play a good role in cooling and sterilizing, eliminating malnutrition and relieving itching; ? 44. Grapes contain sleep-promoting hormones, which are helpful for sleep when eaten regularly; ? 45. Drinking tomato soup in summer can not only get nutrition, but also replenish water. Tomato soup should be cooked and cooled before drinking. Lycopene contained in it has certain anti-prostate cancer and myocardial protection effects, and is most suitable for men to eat. Eating acidic substances and brushing your teeth immediately will damage your teeth health; ? 46. When the flesh is broken due to trauma, apply toothpaste to the wound to diminish inflammation and stop bleeding, and then bandage it. As a temporary first-aid medicine, medicinal toothpaste has the most remarkable effect; ? 47. Spraying white vinegar on the chopping block and washing it for half an hour can not only sterilize but also deodorize; ? 48. Drinking yogurt can relieve irritability after drinking. Yogurt can protect gastric mucosa, delay the absorption of alcohol, and is rich in calcium, which is particularly effective in relieving irritability after drinking; ? 49. When leather shoes are moldy for a long time, you can wipe them with a soft cloth dipped in alcohol and water (1: 1). ? 50. When you have a headache or dizziness, you can apply toothpaste to your temples, because toothpaste contains menthol and clove oil, which can relieve the pain; ? 5 1. Insert the candle into the birthday cake after freezing for 24 hours, and the candle oil will not flow down when it is lit; ? 52. White underwear turns yellow easily after washing. You can take a basin of water and drop two or three drops of blue ink. Soak the washed underwear for a quarter of an hour and put it in the sun. It can be white and clean without wringing it out. ? 53. Pass the exam
3. natural science tips 100 Q, will it?
1. If you eat spicy food and think it will kill you, just put a little salt in your mouth, hold it, spit it out and rinse your mouth, so it won't be spicy; ? 2. Yellow teeth, you can chew peanuts in your mouth and brush your teeth for three minutes, which is very effective; 3. If there is a small area of skin damage or burns, immediately apply a little toothpaste to stop bleeding and relieve pain; ? 4. Always leave ugly tea stains in the cup filled with tea, and wash it with toothpaste, which is very clean; ? 5. Open your mouth slightly when you look up at the eye drops, so that your eyes will not blink; ? 6. If there is an ulcer in the mouth, stick it on the ulcer with vitamin C, and it will basically be fine after the ulcer dissolves; ? 7. Small dust enters your eyes, close your eyes and cough a few times, and the dust will come out by itself; ? 8. After washing your face, gently apply some fine salt on both sides of your nose with your fingers, and then rinse with water, so that blackheads and acne will be removed and pores will become smaller; ? 9. When you have just been bitten by a mosquito, it doesn't itch when you apply soap; ? 10. If the throat and gums are inflamed, cut the watermelon into small pieces at night and eat with salt. Remember that it must be at night, when the symptoms will be relieved and the next day will be fine; ? 1 1. The hair dryer blows at the label, and when the glue of the trademark is hot, the label is easily torn off; ? 12. If you are afraid of wrinkling when traveling with clothes, you can roll up everything; ? 13. Drinking vinegar when burping will get immediate results; ? 14. Eat something that smells bad, such as garlic and stinky tofu, just eat a few peanuts; ? 15. Treat cough, especially dry cough. Before going to bed at night, fry eggs with pure sesame oil, add a little more oil, and don't put any seasoning. Sleeping in hot weather and eating for several days have obvious effects; ? 16. MM with long and thick wrists cannot wear thin bracelets. You should put a plastic bag on your hand and wear a bracelet. It's very easy to wear and won't hurt your hands. Take it off in the same way; ? 17. Chestnut skin is difficult to peel. Peel off the shell first, then turn it in the microwave oven, take it out while it is hot and rub it, and the skin will fall off; ? 18. When arranging flowers, drop a drop of detergent in the water for several days; ? 19. Steam walnuts in a pot for 10 minutes, then take them out and break them in cold water to take out the complete peach kernels; ? 20. Put the shrimps in a bowl, add a little salt and edible alkali powder, rub them with your hands for a while, then soak them in clear water, and then rinse them with clear water, which will make the fried shrimps transparent as crystal, refreshing and delicious; ? 2 1. When frying meat, first soak the meat in baking soda water for more than ten minutes, then pour out the water and try it again. It will be tender and smooth when fried; ? 22. Soaking the remaining tea leaves in water for a few days and then pouring them on the roots of plants can promote the growth of plants; ? 23. Dry the remaining tea leaves and smoke them in the toilet or ditch, which can eliminate the stench and drive away mosquitoes and flies; ? 24. uncooked rice re-cooking method: you can use chopsticks to tie some holes in the rice that go straight to the bottom of the pot, sprinkle a little yellow wine and stew it again. 25. If it's just a noodle clip, turn the noodles to the middle and simmer; ? 26. Clever removal of greasy screen windows: Put the cigarette butts left after washing clothes and smoking in water, and use them to clean glass windows and screens after dissolution. The effect is really good; ? 27. As long as you put a small piece of chalk in the jewelry box, you can keep the jewelry shiny; ? 28. Self-adhesive traces on the surface of tables and bottles can be wiped with wind oil essence; ? 29. Always carry a small dry battery in your bag when you go out. If the skirt is charged with static electricity, wipe the battery positive electrode on the skirt several times to remove static electricity; ? 30. No matter where your shoes rub your feet, you should apply a little white wine to the place where your shoes rub your feet to ensure that you don't rub your feet. 3 1. When mixing vegetables, if you have to blanch, you'd better make full use of the water for blanching good dishes.
If you cook jiaozi, you can put a proper amount of water in the meat stuffing, which not only ensures the nutrition, but also makes the dumpling stuffing delicious and fragrant. ? 32. In summer, feet are prone to sweating. Soaking feet with light salt water every day can effectively deal with sweaty feet; ? 33. Sunbathing after swimming in summer can prevent diseases such as skin strain; ? 34. In summer, pillows are prone to damp and mildew, and frequent contact with pillow cores is good for health; ? 35. Eat more wet spleen such as glutinous rice porridge, which can prevent heatstroke and damp; ? 36. Anti-insomnia: Talk less before going to bed, avoid drinking strong tea, don't use your brain before going to bed, and wash your feet with hot water and vinegar; ? 37. Honeysuckle has the effect of dispelling wind and dampness. Honeysuckle can be mixed with honey to relieve summer heat after being decocted in water to cool the juice; ? 38. Drinking tea after eating too greasy food can discipline nerves and promote fat metabolism; ? 39. Lack of sleep will make you stupid. You need to sleep for eight hours every day. Having a nap habit can delay aging. ? 40. Hands tend to become dry and rough. Soaking your hands in vinegar for ten minutes can protect your skin. ? 4 1. Wipe the mat in summer, and wipe the mat with water dripping from flower dew, which can keep the mat fresh and clean. Of course, it is best to wipe along the grain of the mat, so that the toilet water can penetrate into the grain gap of the mat, so that the cool and comfortable feeling will last longer; ? 42. Eating more acidic fruits and vegetables such as tomatoes and citric acid for breakfast is beneficial to nourishing the liver; ? 43. When washing your hair or taking a bath, adding five or six drops of toilet water to the water can play a good role in cooling and sterilizing, eliminating malnutrition and relieving itching; ? 44. Grapes contain sleep-promoting hormones, which are helpful for sleep when eaten regularly; ? 45. Drinking tomato soup in summer can not only get nutrition, but also replenish water. Tomato soup should be cooked and cooled before drinking. Lycopene contained in it has certain anti-prostate cancer and myocardial protection effects, and is most suitable for men to eat. Eating acidic substances and brushing your teeth immediately will damage your teeth health; ? 46. When the flesh is broken due to trauma, apply toothpaste to the wound to diminish inflammation and stop bleeding, and then bandage it. As a temporary first-aid medicine, medicinal toothpaste has the most remarkable effect; ? 47. Spraying white vinegar on the chopping block and washing it for half an hour can not only sterilize but also deodorize; ? 48. Drinking yogurt can relieve irritability after drinking. Yogurt can protect gastric mucosa, delay the absorption of alcohol, and is rich in calcium, which is particularly effective in relieving irritability after drinking; ? 49. When leather shoes are moldy for a long time, you can wipe them with a soft cloth dipped in alcohol and water (1: 1). ? 50. When you have a headache or dizziness, you can apply toothpaste to your temples, because toothpaste contains menthol and clove oil, which can relieve the pain; ? 5 1. Insert the candle into the birthday cake after freezing for 24 hours, and the candle oil will not flow down when it is lit; ? 52. White underwear turns yellow easily after washing. You can take a basin of water and drop two or three drops of blue ink. Soak the washed underwear for a quarter of an hour and put it in the sun. It can be white and clean without wringing it out. ? 53. Eat too much raw food.
4. Collect ppt of natural science knowledge suitable for preschool children.
Safety tip 1. Liquefied petroleum gas cookers should not be placed in bedrooms, offices, balconies, warehouses, auditoriums and other public places to prevent air leakage and fire.
Second, correctly grasp the use of the switch, wait for the fire, don't wait for the fire, remember to turn off the valve and switch after use, and replace the valve in time if it is broken. Don't let children use cookers or play with switches at will.
Third, when using liquefied gas, someone should look after it and stay away from it. Pay attention to adjust the size of the rotor at any time to prevent the soup from overflowing and extinguishing the flame or being blown out by the wind, resulting in air leakage. Fourth, liquefied gas tanks should be upright, not upside down, and cannot be cooked or roasted with fire.
5. If there is air leakage, measures should be taken immediately: open doors and windows, ventilate with a fan (but not an electric fan), and then find the leaking part. Basic knowledge of fire fighting (1) isolation method: this is a method to eliminate combustible materials.
(2) Asphyxiation method: prevent air from flowing into the combustion zone, reduce the oxygen content in the air, and make the fire source go out under the condition of insufficient oxygen. (3) cooling method: spray water or other fire extinguishing agents on the combustible materials to lower the temperature of the combustible materials below the ignition point and force the combustion of the materials to stop; Or spray water and fire extinguishing agent to combustible materials near the fire source to reduce the temperature of combustible materials and avoid the expansion of the fire.
(4) inhibition method. I hope I can help you.
5. Collect ppt of natural science knowledge suitable for preschool children.
Safety tip 1. Liquefied petroleum gas cookers should not be placed in bedrooms, offices, balconies, warehouses, auditoriums and other public places to prevent air leakage and fire.
Second, correctly grasp the use of the switch, wait for the fire, don't wait for the fire, remember to turn off the valve and switch after use, and replace the valve in time if it is broken. Don't let children use cookers or play with switches at will.
Third, when using liquefied gas, someone should look after it and stay away from it. Pay attention to adjust the size of the rotor at any time to prevent the soup from overflowing and extinguishing the flame or being blown out by the wind, resulting in air leakage. Fourth, liquefied gas tanks should be upright, not upside down, and cannot be cooked or roasted with fire.
5. If there is air leakage, measures should be taken immediately: open doors and windows, ventilate with a fan (but not an electric fan), and then find the leaking part. Basic knowledge of fire fighting (1) isolation method: this is a method to eliminate combustible materials.
(2) Asphyxiation method: prevent air from flowing into the combustion zone, reduce the oxygen content in the air, and make the fire source go out under the condition of insufficient oxygen. (3) cooling method: spray water or other fire extinguishing agents on the combustible materials to lower the temperature of the combustible materials below the ignition point and force the combustion of the materials to stop; Or spray water and fire extinguishing agent to combustible materials near the fire source to reduce the temperature of combustible materials and avoid the expansion of the fire.
(4) inhibition method. I hope I can help you.
6. Who knows little about nature?
Overview of nature-water, air, mountains, rivers, microorganisms, plants, animals, the earth, the universe and so on. , all belong to the category of nature; The science of studying nature is natural science, including mathematics, physics, chemistry, biology, geography and other sciences, and the branches of these sciences are very complicated, such as: biological science can be divided into microbiology, botany and zoology; Then it can be divided into molecular biology, cytology, genetics, physiology and so on. The intersection of various disciplines will produce many branches of disciplines, such as biochemistry, biophysics, molecular structure biology and so on. Man and nature gave birth to mankind, which shows that it respects human behavior. On the contrary, human beings should respect nature more. On the surface, people are born of their parents. In fact, nature has human photon information, so that human embryos can absorb this photon information from nature, and adults are born to their parents when they grow up. At the same time, it is nature that stimulates embryonic dark matter. There are 45336 species of vertebrates in nature, including 244 species of birds 1 and 3862 species of fish. There are more than 3 million species of insects, and only 1 10,000 species have been confirmed. Nature is a natural resource. Man and nature should respect each other, maintain a state of mind of cherishing and caring, make proper use of nature and prevent it from being destroyed. Let the living environment become beautiful, let the natural resources be inexhaustible, and be as close and harmonious as mother and son. Therefore, the richness of information about nature can only be described by a vast sea of smoke, and its complexity is beyond the description of 30 thousand words or a few people. There are all kinds of creatures in nature, including plants, animals, bacteria and fungi. At the same time, nature is also a place containing various ecosystems! The elements of nature are divided into light, darkness, water, fire, wind, thunder and earth, which means that nature controls the balance of these things. The spiritual influence of nature is the first in time and the most important in place. Every day, the sun; After sunset, at night, with her stars, the wind blows forever; Grass grows forever. Every day, men and women are talking, watching and being watched. Of all people, that image attracts philosophers the most. He must decide its value in his mind. What is nature in his eyes? This web of God, its incomprehensible coherence, has never started and never ended. It will always be a circulating force, returning to itself. This is similar to his own mind, and he will never find its beginning and end-so complete and infinite. Since the glory of nature shines, there is a universe above the universe, which radiates like light, with top and bottom, no center and no circumference. Nature is eager to express itself to people's hearts. It's already classified. In the minds of young people, everything is individual and they all stand there alone. Gradually, he knew how to connect two things and see the similarity between them. Then three things, then 3000 yuan; So he was dominated by his instinct to unite everything, continued to tie things together, reduced irregularities, found underground roots, linked opposing and distant things, and blossomed on the same branch. He soon learned that since the beginning of history, facts have been continuously collected and classified. However, what is the meaning of "classification"? It is nothing more than seeing that these things are not chaotic and have nothing to do with each other, but have certain laws, which are also the laws of the human mind. Geometry is purely abstract in human mind. Astronomers find that the motion of planets can be measured by geometry. Chemists found that all substances have proportions and understandable laws; What is science? Nothing more than looking for similarities and similarities in the farthest things. An ambitious person sits down to study every uncontrollable fact; Put all the strange structures and all the new forces into their categories one by one. Reduce them to their theorems and go on like this forever. Through profound observation, the last fiber of various tissues and the outer edge of nature are endowed with life. Therefore, the child under this sky feels that he and nature are "born from the same root"; One is a leaf, the other is a flower; Friendship and sympathy are everywhere. What is the root cause? Not the soul of his soul? An overly bold idea; An absurd dream. However, once the glory of this soul helps him discover more laws of physical properties-when he knows how to worship the soul and sees that the existing natural philosophy is only the preliminary exploration of the soul master, then he will look forward to expanding his knowledge and becoming the creator of the future. He will see that nature is the opposite of the soul, and all parts echo each other. One is a stamp. One is printed text. Its beauty is the beauty of his own heart. Its law is the law of his own mind. So he regards nature as the standard to measure his achievements. The extent to which he doesn't know enough about nature, that is, the extent to which he doesn't master his own mind. In a word, the old proverb "know yourself" and the modern proverb "study nature" finally become the same motto. Praise for nature: 1. Poetry is everywhere, and there are things at any time-Song. Ling Mei of Zhang Daoqi. 2. Spring City is full of flowers-Tang Dynasty. Cold food in Han Hong. 3. If you put a fragrance in your hand, there should be no fragrance on the earth-Song. Wang Anshi's manna song. 4. green. An Apricot Out of the Wall —— Ye Songshao Weng's Not Worth Visiting the Garden 6. He who knows the east wind will always spring —— Song Zhuxi's Spring Day 7. The sun rises, the river is red, and in spring, the river is as green as blue-Tang Bai Juyi's Memory of Jiangnan 8. A little green and colorful, you don't have to move the spring scenery-selling apricot flowers in deep alleys of Ming Dynasty-Song Lu's tour of "Spring Rain in Lin 'an" 10. The shadows are shallow, and the faint fragrance is floating in the dusk of the month-Song Linbu's Xiaomei in the Mountain Garden 1 1. The peaches and plums in the city are worried about the wind and rain, and the shepherd's purse is spent in the stream head in spring-
7. Natural science knowledge
/kloc-three major discoveries of natural science in the 0/9th century;
1, cell theory
The main contents are as follows: cells are the basic structural units of animals and plants, and they are also the basic units of life activities. In this way, the structural unity of the whole biological world is displayed, cells connect all species in the biological world, and there is a kinship between organisms. This is a great support for the theory of biological evolution. The establishment of cell theory has strongly promoted the development of biology and provided an important natural science foundation for dialectical materialism. Engels spoke highly of this and praised the cell theory as one of the three major discoveries of natural science in the19th century.
2. Theory of biological evolution
From 65438 to 0859, Darwin, a British biologist and the founder of the theory of biological evolution, put forward the theory of natural selection of biological evolution in his masterpiece The Origin of Species. The main point of this theory is that the individuals in the group have different characteristics, and these individuals have different adaptability to their environment; Due to the limited space and food, there is competition for survival among individuals. As a result, individuals with favorable traits can survive and pass them on to future generations through reproduction, while individuals with unfavorable traits are gradually eliminated (Darwin called this process of survival of the fittest in natural selection); Due to the long-term effect of natural selection, the same species distributed in different regions may have differences in characters, which may lead to the formation of new species.
3. Law of conservation and transformation of energy
The law of conservation and transformation of energy is an important theoretical cornerstone of natural science in the19th century. The significance of conservation of energy lies in establishing the equivalence relationship between some physical quantities in the process of material movement and change. In this regard, we do not need to know the actual interaction process between substances, nor do we need to know the transformation path between energy in the process of material movement and change. As long as the relationship between energy and physical quantity corresponding to the motion state of matter is established, the equivalent relationship between initial state and final state can be established in the process of material motion change, which is convenient to solve the quantity of material motion change.
8. Why should children master basic natural science knowledge?
3. Let children master the basic knowledge of natural science in "scientific experiments and scientific games". Scientific experiments can not only help children acquire extensive scientific knowledge and establish concepts on the basis of perceptual experience, but also develop children's intellectual skills of observation, classification, measurement and thinking and stimulate their exploration spirit.
For example, in the experiment of what magnets can attract, let children catch fish made of iron, plastic and paper with fishing rods with magnetic blocks. It turned out that all the fish made of iron were caught, but none of the other fish were caught. What is the reason? Through the teacher's inspiration and guidance, let children understand that magnets can attract iron, thus cultivating children's study habits of being good at thinking and thinking positively, and developing children's imagination and thinking ability.