1. Determine the theme of mind map as the third unit of junior three mathematics.

2. List the main knowledge points in Unit 3, such as number recognition, number reading and writing, number size comparison, number operation, etc.

3. Create the central theme of mind map and connect it with the main knowledge points. For example, the central theme is the understanding of numbers, and the main branches include the classification and nature of numbers.

4. Under each main branch, add relevant sub-concepts or details. For example, under the classification of numbers, sub-concepts such as integer, decimal and fraction can be added.

5. Use colors and pictures to enhance the visual effect of mind map. For example, you can mark different branches with different colors, and add some pictures or symbols related to mathematics.

The production steps of mind map are as follows:

1. Determine the central theme: First, you need to determine the theme of the mind map and write it as the central theme in the center of the white paper.

2. List the main knowledge points: Next, you need to list the main knowledge points related to the central theme and associate them with the central theme as sub-themes.

3. Add details: Under each sub-topic, add relevant details to better understand and remember the knowledge points. These details can be explanations, examples or other relevant knowledge points.

4. Use colors and pictures: In order to make mind maps more vivid and interesting, you can use different colors to distinguish different knowledge points and nodes, and you can also add some related pictures to help you understand and remember.

5. Check and modify: Finally, carefully check the mind map to ensure that there are no missing or wrong knowledge points, and make necessary modifications and improvements.

6. Improve the mind map: After completing the preliminary mind map, you can constantly revise and improve it, add new knowledge points and details, and delete unnecessary content to ensure the accuracy and integrity of the mind map.

7. Share discussion: After the mind map is made, you can share it with others for discussion and exchange, so as to get more opinions and suggestions and further improve the mind map.

8. Review regularly: When using mind map for learning and memory, you need to review regularly to deepen your understanding and memory of knowledge points. By reviewing mind maps, we can reproduce knowledge points and details and improve review efficiency.

9. Innovation and improvement: With the in-depth understanding of knowledge points, we can constantly innovate and improve mind maps, try different layouts, colors and connection methods, and better show the correlation and logical relationship between knowledge points.

10, combined with other learning methods: Mind mapping can be used as an auxiliary learning tool, combined with other learning methods, such as reading, listening and practice. Combining with various learning methods, we can understand and master knowledge points more comprehensively.