2. Willing to use language to express and communicate the process and results of exploration.
3. Cultivate observation, imagination and practical ability.
Activity preparation: 1. This activity should be carried out under sunny weather conditions, and the sun shines into the room from outside.
2. Some mirrors, scissors, glue sticks, pencils, plasticine, paper, etc. Packed in plastic baskets respectively.
3. Children have perceptual experience in mirrors and can make patterns in many ways.
Activity flow: 1. Free exploration-where does the light come from?
1 game: mirror and light. Teachers and children play together in sunny places and reflect the light to the ceiling or wall with mirrors.
② Question and communication: How to play? What are these bright and swaying things? Where does the light spot come from? Why did it move?
③ Summary: When the mirror reflects light on the wall, it will produce light spots, which will shake with the shaking of the mirror.
2. Guide exploration-why does the shape of the light spot change?
Are the light spots on the wall the same? What is the difference? Why? (Through observation, operation and discussion, guide children to understand that the shape of the light spot is related to the shape of the mirror and its irradiation angle)
(2) What does the light spot on the wall look like?
3. Deep exploration-how to change the shape of the light spot?
① Guide children to discuss freely.
② Children's operation and experiment. Guide children to paste homemade patterns or figures on the mirror, and then play the game of "mirror and light".
(3) What did the children discover through mutual communication?
Extended activities:
1. Take the children outdoors for further exploration in view of the problems in the experiment.
2. Guide children to further explore other ways to change the shape of the light spot besides changing the position of the light source and sticking things on the mirror.