Addition and subtraction within 10 is the main teaching content of large classes, but because children of this age are still in the pre-operation stage and abstract thinking is in the primary stage, intuitive images are the main way to understand things. In the concept activity of number, we should start from children's life experience, encourage children to use common objects, learn to add and subtract within 10 through hands-on operation and repeated practice, and realize that mathematics can be used to solve problems in daily life.

The first is addition. What is addition? The key word of addition is "addition". Add up all the addends, count them, and then use the decimal operation rules and evolution to get the answer we want! In life, we can use some teaching AIDS to take our children to calculate addition. When using teaching AIDS to calculate, we must repeatedly emphasize the action of "together"! The addition within 10 can be done at home with beading or several strokes.

Then there is subtraction, and there are also keywords. Subtraction means "take away, take away". Addition has carry and subtraction has abdication calculation. 10 without abdication. Life can be interspersed with some problems that need to be solved, such as dividing fruit and going to the supermarket to buy things, to help children understand the meaning of subtraction to the left and find out the answer further.