1. Learn to compare the thickness of objects and arrange five objects from coarse to fine.

2. Cultivate the ability of observation and comparison.

3. Develop visual perception and judgment.

4. Cultivate children's observation, judgment and practical ability.

Activity preparation:

Prepare all kinds of wool, pens, building blocks, paper sticks, coke bottles and so on.

Activity flow:

1, the Monkey King will change the title of' Golden Hoop' to make it thicker or thinner.

2. The children look for a thick object in the activity room and say, How do you know if it is thick or thin? Inspire children to know that they know it through comparison.

3. Show the' magic pocket' so that children can touch thick or thin objects from it and know that the thickness is relative.

4. Show the columns and let the children find out the thickest or thinnest ones, and sort them from coarse to fine.

5. Grouping operation:

(1), take out thick or thin objects from the wonderful pocket,

(2), according to the goods are divided into coarse and fine two categories.

(3) Let children touch thick or thin objects from the "wonderful pocket".

(1) Arrange rods with different thicknesses.

(2) Rub plasticine into five sticks with different thicknesses and sort them.

Extension: compare the thickness of various objects in the surrounding environment, and compare the thickness of various things at home after returning home and make records.

Encyclopedia: Thickness is a Chinese word, which means the degree of thickness.