First diagnose whether the image understanding has passed the test, whether the number of objects is known, and whether the one-to-one correspondence between objects and numbers is known. If not, teach her to count and then recognize the numbers.

Abstract understanding is to find out what is bigger or smaller than X, x = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and tell her one by one if no figures are listed.

Finally, we should stimulate her interest. . . . . . . . . .