Don't look at the picture first, try to think with your head, understand these problems first, and then operate the mind map. Think clearly about the categories of real numbers. What is included?

What is the next rational number? What are the irrational numbers?

Integer scores can be refined, but the two sub-questions of irrational numbers can no longer be divided, so the specific values need not be listed.

_05 Finally, we can classify some things that can be classified, and generalize them at will. If it is really inseparable, there is no need to subdivide it.

_ Special note:

How to learn how to draw a mathematical mind map, skills account for less than half, and brains account for more than half. If the concepts are properly combed and the knowledge points are clear, it is not difficult to draw a mathematical mind map!