Kindergarten Science Experiment 1: Coins in the Water
Pour a little water into the dish and put in a coin. How can you take out a coin without allowing your hand to touch the water or pour it out?
▶ The way to do this is:
Set a piece of paper on fire, put it in a glass, and pour the cup into the plate next to the coin. The water in the glass began to rise, and finally all entered the cup, giving up the coins. When the paper flakes burn, part of the heated and expanded air overflows from the water. After the cup is reversed, the flame is extinguished due to lack of oxygen, and the gas of the cup is cooled, so the pressure drops; In order to maintain the air pressure balance, the air with normal atmospheric pressure outside wants to come in, so the water in the plate is squeezed into the cup.
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Science experiments, small games, and small productions are an effective means and method for children's science education: they all have a positive effect on promoting children's observation, creativity and the cultivation of the spirit of exploration. We must seize the best period of learning in the early childhood stage, infiltrate the natural science knowledge into the life and play of young children, carry out the enlightenment education of scientific knowledge, stimulate their interest and curiosity, and sow the seeds of love for science.
Children's science education provides children with mathematical, astronomical, physical, chemical, biological and other aspects of scientific and technological exploration activities, so that children interact with various natural phenomena or objects and obtain a wide range of early scientific experience. These scientific experiences lay the foundation for children to understand abstract scientific knowledge in the future, and become a bridge to guide children to the world of science. In the process of scientific exploration, they learned to use the senses to acquire experience, learned to use the method of observational analysis to explore problems, learned to apply the method of classification to simplify information, and learned to measure the method of precision of the information obtained, thus promoting the development of their ingenuity.