19 19 years of good friends, hand in hand,

Three, seven, three, seven, seven, seven, so close. Let's go together, four, six, four.

Make a pair of hands in half. One plus nine, ten tadpoles,

Two plus eight, ten old ducks, three plus seven, ten old hens,

Four plus six, ten golden monkeys, five plus five, ten big tigers.

Addition within 10

/kloc-subtraction within 0/0

Extended data:

Master the skills of addition and subtraction within 10.

Children should keep in mind that the methods of "9-to-0/","8-to-2", "7-to-3", "6-to-4" and "5-to-5" are simple and easy, and the thinking process includes "looking at large numbers (looking at large numbers), dividing decimals (looking at decimals), doing ten and adding even numbers".

Teach children from a simple beginning, such as1+1= 21+2 = 3. First, with physical objects, such as 1+ 1, you can take 1 apple, 1 apple.

Tutoring children in mathematics at home should be flexible and diverse, which can stimulate their thinking.

How much is 3+7? How about 7+3? How about 8+2? At this time, if you supplement the question in turn: Are those two numbers 10? How many such formulas are there? How to judge that you have finished writing? Is it regular? Let children find the rules: 0+ 10, 1+9, 2+8, 3+7, ..., 10+0, and then put forward that the sum of those two numbers is equal to 1 1? How many such expressions are there? Then it is put forward that the sum of two numbers is equal to 100, and this formula can be supplemented by several lines.

These questions can cultivate children's ability to explore mathematical laws. Sometimes, when you are busy doing housework, the child asks you to give him a problem to do. You can draw a geometric figure on paper and let the children talk about it. For example, draw a circle and let the children imagine. Some children say it looks like pie; Like a full moon; Like the buttons of mom's beautiful coat. As long as it is round, no matter what you say, the more you say, the better. This can cultivate children's imagination and observation.