1. Guide children to watch videos, and let them initially perceive some scientific phenomena such as "evaporation of water vapor" and "how rain is formed".

2. Understand the relationship between rain and human beings.

3. Stimulate children's interest in observing, discovering and exploring nature.

Activities to be prepared

1. Draw a rabbit and a mother rabbit.

2. Projector, the story "Little Water Drops Travel" and related slides.

Activity process

First, the teacher acts out the situation and asks questions. The teacher took the rabbit out to play with his mother rabbit. Suddenly it rained. Rabbit asked his mother, "Why does it rain in the sky?" The story leads to the topic and asks the question: "Children, do you know why it rains?"

Second, watch PPT (watch evaporation video)

1. Teacher's question: Look carefully, what do you find?

2. Summary: When the water is hot, there will be water vapor, and the phenomenon that a lot of water vapor runs upward is called "evaporation".

4. Discussion: Have you seen the phenomenon of "evaporation"? (divergent thinking)

Third, observe the phenomenon that water vapor turns into small water droplets when it is cold.

1. Please touch it. Is the lens cold or hot?

2. Pour hot water into the cup and ask: What comes out of the cup? (water vapor)

3. What happens when the lens is covered on the teacup? Why are there small drops of water on the glass? The experimental results show that water vapor will become small water droplets when it is cold.

Four, slide show (through intuitive teaching, focus on understanding the scientific phenomenon "why it rains")

1. The sun is a big fireball, it is like a big stove. Clothes, handkerchiefs, rivers and water in the land are turned into steam by the sun. Where did all this steam go?

2. Ask the children to listen to an interesting story "The Journey of Little Water Drops" (combined with slides).

Please tell the little secret "Why is it raining in the sky" to Mother Rabbit and Little Rabbit.

Verb (abbreviation of verb) expands activities (understanding the relationship between rain and human beings)

1. Let the children try to talk about the benefits of rain.

Let the children try to talk about the danger of rain.

3. Summarize the benefits and harms of rain told by children, educate children to learn from the knowledge and skills of primary schools, grow up to be scientists, and let rain do more good things for mankind.