Points. Key points: the hands, mouth and eyes are consistent. First of all, ask yourself and answer. After all, ask "How many?" "Three", be sure to let him watch it again, that is, you have to review it again. In fact, you are telling him why it is "three", which is the so-called "three". Then you can ask him how many he has first, and then you can see his reaction.

Parents quickly judge which auxiliary method to use. When I was teaching marks, I taught Yu Zejie the method of "how much" with ten hands, so that I could use the representation of fingers to assist him in the future, and the teaching AIDS also chose the same items at first.

Singing and recognizing numbers. In fact, normal children's mathematical development process is to sing first and then count, but I teach children almost simultaneously, because singing and counting are too easy for our children, because their characteristic is good mechanical memory. If your child can sing, he can count to 100. Don't be complacent. Just because he is good at it doesn't mean he can count. Only after calculating can he say that he has the concept of calculation and knows how to calculate.