The construction mode of mathematical mind map is to determine a central theme, lead out sub-themes, and then divide the sub-themes into levels. The specific operation steps are as follows.

1, use the most concise language to determine the mathematical theme to be drawn. Take "angle measurement" as an example.

2. An angle is a figure composed of two rays drawn from a point. So get to know the rays first.

3. Draw line segments and straight lines with rays and compare their similarities and differences.

4. For important knowledge points about angles, you can mark keywords on the mind map.

Note: In the mind map above, the definition of light is derived from the angle. Draw a line between the angle and the ray, so that we can connect the knowledge points in series.

Extended data:

1. Draw from the center of a piece of white paper (usually A4 paper), leaving blank around.

2. Use images or pictures to express your central idea.

3. Use colors in the drawing process.

4. Connect the central image with the main branch, then connect the main branch with the secondary branch, then connect the tertiary branch with the secondary branch, and so on.

5. Let the branches of the mind map bend naturally, not like a straight line.

6. Use one keyword per line.

The first volume of primary school mathematics textbook published by People's Education Press consists of eight chapters, focusing on decimal multiplication, location, decimal division, possibility and other knowledge. There are many knowledge points involved. For example, in the chapter of decimal multiplication, we need to learn the knowledge of decimal multiplication by integer, decimal multiplication by decimal, approximate value of product and so on. Summarize the knowledge points into mind map, and use the divergent relationship of mind map to summarize the knowledge points to help students learn systematically.

Mind mapping is an effective and efficient way of thinking. Apply it to the thinking "map" of memory, learning and thinking. Conducive to the divergent thinking of the human brain. Mind mapping has been widely used in the world. Singapore's Ministry of Education has listed mind mapping as a compulsory subject in primary schools, and a large number of top 500 enterprises are also learning mind mapping. China has been using mind mapping for more than 20 years.