There are several ways for junior middle school students to improve their math scores quickly by using the wrong textbook:

1. Set up the wrong question book: record the wrong questions in each exam or exercise, including the question type, problem-solving ideas and answers. You can use the wrong paper book or the wrong electronic book, and choose according to your own preferences.

2. Analyze the reasons for the wrong questions: For each wrong question, carefully analyze why you made a mistake, because you didn't master the relevant knowledge points or because you were careless. Only by finding out the causes of the mistakes can we review and improve them in a targeted manner.

3. Make a review plan: Make a reasonable review plan according to the number and difficulty of the wrong questions. You can classify the wrong questions according to the knowledge points and spend some time reviewing and consolidating these knowledge points every day.

4. Do more questions: Through a lot of practice, you can deepen your understanding and memory of knowledge points. You can choose some similar wrong questions to practice to test whether you have mastered the relevant knowledge points.

5. Ask for help: If you encounter problems that are difficult to understand or solve, you can ask teachers, classmates or parents for help. They may give different ideas and methods to help you better understand and master knowledge.

6. Repeated review: Wrong questions are valuable review materials, so you should read and review them frequently. In the review process, we should pay attention to summarizing and summarizing, and organize the knowledge points into our own mind maps or notes to facilitate future review and review.