Activity preparation:
1, hang balloons, a big red and green cuboid building block with the same size, two pictures of chickens and ducklings, and a small velvet chair.
Everyone has different heights of materials: red and green. There are several small rectangular and cylindrical building blocks, several wooden beads, a measuring cup of different sizes, a sleeve and a plate. The plate has squares on the front and studs on the back.
Activity flow:
Group activities:
1, who caught the balloon?
Ask two children, A and B, to take pictures of the hanging balloon (no tiptoe, no jumping). You can see that A can take pictures of balloons, but B can't. Why did the teacher catch the balloon and B didn't-which led to the topic of height.
2, compared with peers.
Pairs of children are taller (or shorter) than the teacher. Name two people who are taller and shorter or the same height. Free exchange partners can be repeated many times. (Teacher: A is taller than B, and B is shorter; Compared with c, a is shorter than c)
3, than electrical appliances
Children are free to look for two kinds of electrical appliances in the activity room: for example, the thermos is high and the cup is short; The combination cabinet is high and the small chair is short. ...
4, than building blocks
The teacher showed a red and green cuboid building block, and changed the placement mode for the children to observe and compare: the two building blocks are flat-the same height; Red building blocks stand up and green building blocks lie flat-red is high and green is short; The red building blocks are tiled and the green building blocks are erected-the red ones are short and the green ones are high. The teacher took down the red building block and asked, Is the green building block tall or short? (Children can't compare) This makes children understand that an object can't be compared with height, and only two or more objects can be compared with height.
Grouping operation:
Give the children a material of different heights for comparison.
1, let the children put the same number of small rectangular blocks on the table in the same way. (The teacher asked: Who is tall and who is short? Child: the same height)
2. Let the children put the same number of wooden beads into the sleeve and then insert them on the raised nail plate, which is higher than the other side. Teacher: Let's see who sticks high and who sticks short. Child: the same height)
3. Let the children compare two measuring cups of different sizes. (The teacher asked: Which is taller and which is shorter? Children: the big cup is high and the small cup is short)
4. Please put 6 red cylinders together, then 5 green cylinders together, and then compare them. Teacher: Which is tall and which is short? Children: The red cylinder blocks are taller than the green ones. Teacher: What method can make the red cylinder building blocks shorter than the green cylinder building blocks? Child: Take two red cylinders or add two green cylinders.
Demonstration game:
The teacher shows pictures of chickens and ducklings (covering the lower part) to play games. The teacher said in a chicken tone, my chicken is tall and your duckling is short. The teacher then said in the voice of the duckling, No, my duckling is tall and your chicken is short.
The teacher asked the children to judge whether the chicken and duckling were tall or short. Children may answer as high as they do, because their lower part is covered with cloth, which is the same height from the head. )
The teacher took off the covered cloth, and the children saw the chicken standing on the small chair and the duckling standing on the ground. Let them think again, which is taller, a chicken or a duckling? The teacher can take the chicken off the chair and compare it with the duckling while talking, so that the child can understand that the height must be on the same plane.
Extended activities:
The teacher asked the children to go to the playground to find any object to compare with themselves. For example, let the children compare me with the big tree, and the tree is taller than me; Compared with the railing, I am taller than the railing. The teacher reminded the children to stand on the same plane for comparison.
After the teacher sent the children home, they were taller than their parents. If children are taller than their parents combined, how should they be compared? Tell everyone the method of comparison.