2. Enter GitMind, click New Brain Map to create a new blank brain map.

3. Select the central theme, press Enter to insert peer nodes, press Tab to insert subordinate nodes, and use Delete to delete nodes.

4. Select the central theme of pupils' mind map, click the Node Insert button at the top of the interface, and add peers, subordinates and superiors.

5. Click the theme button on the left to use the mind map theme that comes with the software. If you don't want to use your own theme, you can freely set the connecting lines, borders and rounded corners of the mind map after choosing Customize.

6. Double-click the node to enter the text of primary school students' mind map, and click the text to change the font, font size, font color and background color of the node.