What if the child can't count on the real thing?

When teaching your baby to count, you should use specific things in life to teach, such as: teach her to count three apples, three sweets, five people, five cars and so on. Slowly, she will abstract the two mathematical concepts of 3 and 5, understand their corresponding relationship with specific things, then gradually understand the differences between them, learn to compare sizes, and finally use numbers to operate. This is a process and cannot be rushed. Take your time.