In the process of sorting out, we can first establish a general idea (outline), so as to sort out the operation concept, operation order, operation of 0 and operation law with "sorting out elementary arithmetic knowledge" as the center.

Then, on the basis of sorting out the outline of elementary arithmetic knowledge, the content of mind map diverges, such as the concepts of four operations and elementary arithmetic; There are parentheses and parentheses in the four operations; The operational characteristics of six kinds of zeros; Four operations and seven laws.

Mixed operation refers to the mixed operation of addition, subtraction, multiplication and division, which is an important content in the primary school mathematics stage and the basis for learning other related knowledge.

Mind mapping is an effective way of thinking. The application of mind mapping in memory, learning and thinking is beneficial to the expansion of human brain and the development of thinking.

This can not only promote students' meaningful learning and deepen their understanding of concepts, but also encourage students to integrate old and new knowledge, master knowledge structure and build knowledge networks. At the same time, improve students' ability to analyze, ask and solve problems, and cultivate students' ability of independent learning and exploration.

When many students are studying, they will have problems such as incomprehension and arithmetic errors because of the deepening of knowledge. At this time, you can try to draw knowledge points with mind mapping tools to help organize knowledge.