If you want to draw inferences, you must first learn to generalize.

1. Classify knowledge points through investigation.

2. Classify by solving problems.

3. Classify by asking questions.

After classification, similar problems can be better linked, and the thinking of solving problems is clearer and the problem solving is smoother.

After classifying and summarizing the topics, we should also identify them.

The method of identification is actually similar to the method of classification, but it is necessary to develop a good habit of examining questions in order to better judge the problem and then solve it in the most appropriate way.