For the first-year students, the counter really plays an important role in the understanding and operation of numbers. The thinking of first-year students is mainly visual. In the specific operation stage, some simple learning tools are needed to help students learn mathematics, such as sticks, safflower, counters and so on.

In actual teaching, these teaching AIDS have their own advantages and disadvantages. We must choose the appropriate teaching AIDS according to the teaching content. Only in this way can the teaching AIDS get twice the result with half the effort.