This paper combs and summarizes the knowledge of the third unit of mathematics in the second volume of the fourth grade, and draws the application of the law of addition, subtraction, multiplication and division taught by the third unit in the picture frame.

First draw a large rectangular pattern, then add a straight line and a small rectangular text box on its four sides. Continue to add oval or round text boxes outside the small rectangular text boxes. Here, students can adjust the number of text boxes according to their own needs.

Add some symbols and patterns related to mathematics, such as Arabic numerals, geometric patterns and so on, to the remaining blank space on the paper. Paint the text box of mind map with different colors such as orange, red, blue and pink to make the text box more eye-catching in the picture.

The significance of mind mapping:

The establishment of mind map is helpful for people to describe and analyze the problems they are thinking comprehensively and systematically, to think deeply and creatively about the problems they are studying, and to find the key factors or links to solve the problems. Drawing mind maps is also good for memory. It forms a mind map tree in your mind and is easy to remember.

For students with poor abstract thinking ability, "image memory" can really help students improve the efficiency of "memorizing knowledge", but it can't deepen students' understanding of knowledge, which belongs to a shallow learning.