Parent-child game of comparing weights

Purpose: To develop the ability to compare weights.

Prerequisites: Some experience in daily life and the ability to compare weights.

Methods:

(1) to the child to make a simple scale, with a wooden stick, tied on each side of a rope hanging two small baskets as a scale, the middle of a rope tied to a rope as a rope, according to the two baskets of the light weight to move the position of the rope, or in the light of the basket to add some paper to make the scale balanced, it has made a simple scale. Then put apples, pears and other items in each of the two baskets to compare who is light and who is heavy. Let the child understand that the heavier ` end will fall down, the lighter end will be up, and both sides will be as high when they are the same weight (Figure 8-7A).

(2) Parent: "Look, the little panda, the little goat, and the little dog are playing on the seesaw; can you see which of them is lighter and which is heavier?" Let the child point out the lightness of the animals one by one, and if the child can already accurately compare the lightness, have him or her connect the two

pictures to compare them (Figure 8-7B)