1, ratio size, ratio quantity, ratio length and ratio height. For example |: 1, there are more ellipses than rectangles, fewer ellipses than rectangles, and more ellipses than rectangles.

2. Add <,>, =.

6○9 2+3○5 8○5+2 6-3○3+2 7+2○9

6 4 8 3 9 0 is arranged in descending order. (or from small to large)

Fill in the blanks () () 7()5 4 () () 1 ()

8 The front is () and the back is ().

Can accurately distinguish the difference between left and right and three and three. For example, there is a little star on the picture. Colour the third one on the right red and the fifth one on the left green. Circle the three on the left Circle the four on the right

Master the decomposition of 2, 3, 4, 5, 6, 7, 8 and 9, so as to accurately and skillfully calculate any form of oral calculation from 0 to 9. For example |: 5+1= 4-0 = 8-2 = 9-5 = 6+3 = 5+0 = 0+0 = 2+() = 7 6-() = 3 ()-5 = 3 ()+4 = 8.

() +()=7 ()-() = 1 ()-()=0 Such exercises must be carried out every day, with fast speed, neat handwriting and accurate calculation.

Math book pages 28, 29, 30, 45, 47, 5 1, 57, 58, 6 1, 62 look at the formula, students must accurately grasp, in order to understand why the addition and subtraction. How many formulas can a picture list? Why?

Can distinguish between three-dimensional graphics and plane graphics.