1. Determine the central theme: write "division" in the center of paper or software.

2. Sub-topic: Take all aspects of division as sub-topics. Such as "definition of division", "rules of division" and "application of division".

3. Add details: Under each sub-topic, add more details and information. For example, the definition of division can be added with "Division is a mathematical operation of dividing one number (dividend) by another number (divisor)".

4. Use graphics and colors: In order to make mind maps more attractive, you can use various graphics and colors. For example, a large division symbol () can be used to represent the central theme of division, and lines and shapes of different colors can be used to represent different sub-themes and details.

5. Keep it simple: Although adding graphics and colors can make mind maps more attractive, you must not make mind maps too complicated. The topics and details of each branch should be directly connected with the central theme.

Division is an important concept in second grade mathematics, which is a mathematical operation to divide one number (dividend) by another number (divisor). By learning division, we can better understand the concepts of integer and fraction, and lay the foundation for future mathematics learning.

Let's first understand the definition of division. Division can be expressed as ""and read as "division". For example, we can say 10÷2=5 ",which means that 10 is divided into two equal parts, and each part is equal to 5. In the division operation, the dividend should be divisible by the dividend, and there can be no remainder. If the dividend is greater than the divisor, the quotient is lower than the dividend and the remainder is higher than the divisor.

In the division operation, we need to pay attention to the following points: First, both dividend and divisor must be integers. Secondly, the dividend must be greater than or equal to the divisor. Finally, if the dividend is greater than the divisor, the quotient is lower than the dividend and the remainder is higher than the divisor.