Read the textbook, observe the pictures given above, read from left to right or from top to bottom, find out the mathematical information and ask questions.

Check whether the questions you ask are consistent with those in the book and compare them. What's the difference between the questions in the book and your own? Is it yours or this book's?

There are four small steps:

(1) Thinking: How to solve the problems in the book and how to work them out?

(2) Say: Talk about the problem-solving ideas yourself.

(3) Look: How was this book made?

(4) Fill in the blanks: Fill in the blanks in the book.

Now you can try to do the after-class questions, only 1 and 2, please check them. If there are three small mistakes in a question, please repeat the third step. If it is not correct, please use the fifth step.

Write your mistakes in a special notebook. What are the similarities between mistakes? (Parents can participate) We must pay attention to these problems, and the problems that appear in the preview are likely to appear in the future.