Children need to have certain logical concepts and abstract thinking ability when learning mathematics. In mathematics learning, it is very important to cultivate children's basic mathematical concepts. In daily life, many games and common sense of life can cultivate children's mathematical consciousness and thinking. However, we still need to systematically train children in mathematical concepts and cultivate their ability to convert between concrete thinking and abstract thinking, such as vertical calculation and verbal calculation, which all require abstract thinking ability.

This series of books follows the characteristics of children's thinking in images, and adopts a step-by-step and abstract visual combination method to explain the most basic concepts and skills in mathematics in detail and completely: understanding the number symbols, comparing the size of numbers, understanding the order of numbers, understanding the relationship between numbers and quantities, understanding the composition and decomposition of numbers, and explaining the operation principle, classification and cognitive construction of geometric figures of addition and subtraction operations. The practice forms are diverse and easy to understand, which ensures that children fully understand various concepts and skills of preschool mathematics. The consolidation and training of some abstract graphic knowledge can also cultivate children's abstract thinking ability.

This series adopts the method of learning and practicing, which can help children consolidate what they have learned and lay a good foundation for primary school learning.