What are some convenient and easy-to-operate science experiments for kindergartens in 2017? Today, I will tell you about some fun science experiments that are popular with children. Parents who design experiments for science classes can refer to the detailed introduction below and start doing science experiments. 2017 Science Lesson Plan KindergartenTheme: Flying plastic bags Prepare the Materials Plastic bags, hair dryers, PPT or video "Hot Air Balloon" Course flow1. Say hello. Ask the children to introduce themselves (the form can be varied) The teacher leads the children to review the content of the last lesson 2. Theme Import 1. The teacher leads the children to discuss tools that can fly. Question: What vehicles flying in the sky have you seen? (Plane, spaceship, hot air balloon) What fuel do they need to fly in the sky? (Plane: aviation gasoline, kerosene, spaceship: liquid oxygen, hot air balloon: liquefied gas.) 2. Explore how plastic bags fly. Question: Today we are going to make something that can fly. We will use common items in our daily life, such as plastic bags. How do we make it fly? (Blow air) 3. The principle of hot air balloon flight. Question: Just now we blew air into the plastic bag and found that it would fall down soon. How can we make it fly a little longer? Review again the video of how the hot air balloon flies and guide the children to speak actively. Explain to children the principle of hot air balloon flight: the high temperature gas in the airbag makes the weight of the hot air balloon less than the gas density difference, which generates the buoyancy of the air and the hot air balloon floats in the air. There is a lot of liquefied gas in the hot air balloon, which can continuously provide gas, allowing the hot air balloon to fly for a period of time. 3. Make a flying plastic bag. 1. Question: Then our plastic bags also need a tool that can provide heat. Think about what can release heat at home? (Hair dryer) Teacher operation: Turn the plastic bag upside down, put the blower deep into the bag and turn on the hot air switch, turn off the blower after a few seconds, then release your hand and the plastic bag will float up. The teacher explained the principle: Because hot air is lighter than air, it moves upward, and the plastic bag also rises. When the air is heated and rises, the hot air moves upward through convection. The heat emitted by the heater at home warms the whole room, also through convection. 2. With the help of the teacher, the children conduct the test flight by themselves. 4. End of the course Course extension: Ask the children to go home and think about what else they can use to make flying objects, and experiment with their parents. Ask the children to say goodbye to other children and teachers. Course purpose: Through this interesting science experiment, let the children understand the concept of air and improve the baby's spirit of exploration. Let the baby have a better scientific awareness and concept |
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