Activity purpose:

1, through the visual comparison of height, know what is high and what is short, and perceive the relativity of height.

2. By learning the order of heights, you can find out other objects that are higher (shorter) than something in a group of objects.

3. Learn simple comparison methods to cultivate children's ability of observation, comparison and judgment.

Key points: Compare the heights by visual inspection, know what is high and what is short, and perceive the relativity of heights.

Difficulty: By learning the order of heights, you can find out other objects in a group that are taller (shorter) than something.

Activity preparation:

1, demonstration aid: two trees with different heights.

2. Operating materials: sticks, building blocks, bottles, cups, dolls and so on with different heights.

Activity flow:

(1) Visually compare the heights of objects.

1. Show two dolls and guide the children to observe.

"Who is this? (Two dolls) I put them all on this flat table. Look at these two dolls. Who is taller than who? Who is shorter than who? The big doll is taller than the little doll, and the little doll is shorter than the big doll. )"

2. Show a chinese baby and guide the children to compare.

"I have a doll. I also put her on this tablet, between these two dolls. Here are dolls of 1, 2, 3. See which doll she is taller than. Shorter than which doll? (taller than this little doll, shorter than this big doll. It turns out that they won't know their height until later. "

(2) Children and children's groups are higher than children.

1, please come up and compare the tall and short children.

"Just now, our dolls are taller than others, so let's compare them with our children. I'll ask the two children in this group to come up first. You are all standing on the flat ground. Let's see which of the two children is taller. Who is shorter than who? "

Please invite another child of medium height to come up. All three children are shorter than their height.

"I will invite a child to come up and stand on the floor, among the two children, to see who she is taller than? Who is she shorter than? "

I know there are other groups of children who also want to have a competition, and then invite two children from this group to come up. Ditto.

(3) Children and trees are taller than each other.

1. The child is taller than the tree.

"Now I ask children to compare with other things. Do you know what this is? I put the tree on the flat floor. Is it tall or short? I don't know. If you want to know whether a tree is tall or short, you need something to compare with it. Then I will ask one (middle) child in this group to compare with this tree. Who is taller than who? Who is shorter than who? "

2. Show young trees. "You said the child is short, so I still have a small tree and put it on the flat ground to see who is taller than who now? Who is shorter than who? Compare the child to two trees (the child is shorter than the big tree and the child is taller than the small tree). )"

I know there are other groups of children who want to compete with the tree, and then invite a (tall) child from that group to come up. Who is the tallest? Who is the shortest? The big tree is taller than the small tree, and the big tree is shorter than the children. )

Summary: Height can only be known after comparison, and height cannot be judged by a single thing.

(4) Sort by height.

1, "The teacher has prepared many toys for the children. These toys are tall and short. Please compare them on the table and line up according to their height. "

Each child uses the following operating materials:

(1) Sort by bottle height; (2) according to the height of the doll; (3) Building stairs with building blocks from low to high; (4) classifying according to the height of cups; (5) Sort by stick height.

2. Discussion: Ask individual children to bring the arranged toys to the podium. What toys are these? How many did you count? The teacher pointed to one of them and asked, what are those taller toys? What toy is shorter than it?

(5) Outdoor activities

It is higher for children to look for objects outdoors.

"Today, we learned how to compare heights. Now let's line up from short to high and see if there is anything outside that can compare with height.