Activity objectives:
1. Let children have a simple understanding of bacteria, knowing that bacteria are small, but they have great effects.
2. Teach children the correct way to wash their hands, and let them know that washing hands can kill many harmful bacteria.
3. Cultivate children's good habit of being clean and hygienic.
4. Get to know the little common sense of health.
5. Know how to prevent diseases.
Activity preparation:
Picture of bacteria under microscope picture of soapy water faucet towel
Activity flow:
First, the beginning part:
1. Tell me what bacteria are and introduce the topic.
Teacher: Do you know what bacteria are, children? What do bacteria look like? [Zhang Wen] How will it affect our health?
2. Show pictures to guide children to observe pictures and understand the external characteristics of bacteria.
These are photos of people looking at bacteria under a microscope. Real bacteria are so small that they are invisible to the naked eye.
3. Inspire children to discuss where there will be bacteria.
Second, the main part
1. Listen to the story & gt Let children learn the correct way to wash their hands.
2. The teacher asked: What is the dirty thing on your hand? How can we get rid of these dirty things?
Let's wash our hands together! See whose hands are cleanest?
4. What is the most correct way to wash your hands?
Tell the children to wash their hands under running water. Wet their hands with water first, then spread soap evenly, rub out foam, rub their hands and rub their backs.
Don't let go of your fingers. Finally, rinse with clear water and dry with your own towel.
Third, the conclusion part.
1. Bacteria are small, but they are also useful. Some of them will bring trouble to people and make us sick. However, some bacteria are used by our clever scientists to become useful drugs, food and daily necessities. We also have many useful bacteria in our bodies.
2. Teachers guide children to observe pictures and know what useful bacteria and harmful bacteria look like.
3. The conclusion is over