1, know the morphological characteristics of various seeds and know the propagation methods of seeds.
2. Cultivate children's observation ability and stimulate children's interest in the spread of plant seeds.
3. Cultivate children's love for nature.
4. Cultivate curiosity and exploration spirit.
5. Understand the common sense of seed growth.
Teaching emphases and difficulties
Teaching emphasis: cultivate children's love for nature.
Teaching difficulty: knowing the spreading method of seeds.
Activities to be prepared
1. Material preparation: all kinds of seeds, pictures of their spreading process, courseware "Spreading of Seeds", tape recorders and tapes (apples, peaches).
Some gourd seed headdresses
2. Experience preparation: Before the activity, lead the children to the countryside for spring observation, understand that spring is the season of sowing, and the children participate in sowing activities and have a preliminary understanding of seeds.
Activity process
First, introduce the seeds.
1, the teacher shows apples and peaches. Spring came, and the teacher invited two mysterious little guests to the children. Who are they?
2. The teacher cut the apples and peaches to take out the seeds and guide the children to find the seeds in the fruit.
3. The teacher explained the purpose of seeds. Question: What other seeds have you seen?
Second, observe the seeds.
1, children operate and observe the seeds.
2. Tell me about the seeds you know. Such as corn, rice and peanut seeds.
Third, know the seeds.
1, understand the appearance characteristics of four seeds: small dandelion is like a small umbrella, small cocklebur has thorns, small grapes are small and black, and small gourd is white and like melon seeds.
2. Children find the characteristics of these four seeds through observation and operation, and let them choose these four seeds.
Fourth, the spread of seeds.
1, interpretation and communication
2, operating courseware, children observe the methods and processes of seed spread.
Teacher's summary: Dandelion spreads by wind, Xanthium sibiricum spreads by animals, grapes spread by birds, and gourds spread by water.
Five: distinguish seeds.
Look at other seeds and tell which ones are edible and which ones are not.
Six; Game: sow.
The child is a gourd seed baby, and the teacher sows.
Encyclopedia: the unique propagule of seeds, gymnosperms and angiosperms, which is formed by ovule pollination and fertilization. Seeds are generally composed of seed coat, embryo and endosperm, and some mature seeds only have seed coat and embryo.