Many things that children come into contact with in daily life have quantitative characteristics, especially large and small, which are easily perceived and experienced by children aged 3-4. So, I designed the game "Big and Small Markers Find Friends". First, let children perceive and experience the meaning of size marks through body movements, then match the corresponding marks for the large and small objects that they often contact in daily life, and finally classify and match the size marks. Through this mathematical activity, children can perceive, experience and compare the size of objects, know the size signs, and thus initially establish an understanding of the concept of size. At the same time, in the process of learning, children's perceptual ability and comparative ability can be developed.

Activity objectives:

1, recognize the size.

2. Learn to match corresponding marks for objects of different sizes.

Activity preparation:

1, knowledge preparation: In daily life, consciously guide children to find objects of different sizes around them and have a preliminary understanding of the big and small.

2. Preparation of teaching AIDS: 3-4 markers; There are a number of items of different sizes in the activity room, such as toys of different sizes provided in the toy cupboard, books of different sizes placed on the bookshelf, cups, pots, plates, spoons, photos and so on. A number of chairs with different sizes (the same number as children); A toy basket of different sizes.

Activity flow:

First of all, you should know the size mark.

The teacher shows the size marks and guides the children to imitate the shapes of the size marks with actions and understand the meanings represented by the marks. "The teacher gave each child a card with a doll on it. Please look at the doll on your card and know what it looks like. "

Second, consolidate the understanding of the meaning of the tag and learn to match the corresponding objects for the tag.

1. Find a chair and put it on the signboard.

"There are many chairs in the classroom. Are they the same? " (big and small) "Think about what chair a child with a big sign should sit in? What chair is the child with the small mark sitting on? " The child finds the corresponding chair to sit down according to the mark and checks "What mark do you have?" ? What chair are you sitting on? " .

2. The matching mark of the project.

"There are many objects of different sizes in our classroom that want to be friends with Mark. Please choose a tag and find a good friend for it. " Children can freely choose markers and stick them on the corresponding objects. The game is repeated 3-4 times.

3. Classify large and small items and send them for marking.

The teacher shows two baskets of different sizes and makes the children think: "Are these two baskets the same?" ? What items should be put in a big' home' (basket)? Who should live in a small home? "Let the children classify according to the size of the items.

"Please think about it, how can we know where is the home of big toys and where is the home of small toys?" Children will mark things.

Activity expansion:

1, such games can also be played in daily life. Teachers should create an environment that can arouse children's activities and provide rich and interesting materials, so that children can gain experience of things and realize the size difference between objects in the process of sending marks to large and small objects.

2. In the math activity corner, teachers can provide various small games to let children perceive and compare the size of objects. For example, in the game of touching boxes, let the children touch a glass ball, then touch a ball bigger (smaller) than this ball and put it in the corresponding basket according to the mark; Another example is to play a fruit game, where children can make fruits of different sizes with sludge, and then hang the fruits on the "tree" according to the marks. Children can touch, observe and compare fruits of different sizes by kneading and grouping.

3. On the basis of knowing the size, you can also carry out activities in order of size, such as queuing shoes of different sizes and queuing bowls of different sizes. We can further carry out activities corresponding to the size, such as finding caps for bottles of different sizes and feeding animals of different sizes, so as to gain experience corresponding to the size.