Teaching objectives:
1, understand the shape and characteristics of corn, and know the purpose of corn.
2. Find the corresponding number of corn kernels for several cards and experience the relationship between number and quantity.
3. Be able to cooperate with peers and try to record the results.
4. Cultivate children's spirit of trying and develop children's agility and logic of thinking.
brief introduction
Teaching preparation:
1, the teacher prepared unpeeled corncob in advance and downloaded the pictures of corn growth and use on the Internet.
2, old corn cob, 1-7 digital card.
Teaching process:
Understand the shape characteristics of corn.
1. The teacher aroused the children's interest.
The teacher shook the box and said mysteriously, I have another good thing here. Please come up and have a look. Tell me softly after reading it. What is this?
The teacher shows the corn and corrects the child's answer: its name is corn, or it can be called corncob.
Observe the shape characteristics of corn.
What does a corn cob look like? Let's see what is the outermost (bract leaf). How do the bract leaves look? Layer by layer.
Teacher: What's in the corn cob with the buds peeled off? I prepared a corn cob for each of you. Take a closer look at the shape of corn cob. What colors do you have? What do corn seeds look like?