Preventing mistakes is the main way to reduce junior high school students' mistakes in solving problems. Before the lecture, if teachers can foresee the possible mistakes that students may make when learning the content of this lesson, they can consciously point out and emphasize them during the classroom explanation, thus effectively controlling the occurrence of mistakes. For example, before explaining the equation X/0.7-(0.17-0.2x)/0.03 =1,we should foresee that the basic properties of the fraction and the properties of the equation will be confused in this question, so we should prepare some exercises about the basic properties of the fraction and the properties of the equation when reviewing the question to help students understand the difference between them and avoid confusion and mistakes. Therefore, when preparing a lesson, we should carefully study the error-proof words in the textbook text, the matters needing attention after the examples, and summarize several problems that should be paid attention to in the review. At the same time, we should also speculate on the psychological process of students learning the content of this lesson, so that students can understand the mistakes in advance and nip them in the bud. If students fail to find problems and correct their mistakes in time, problems will emerge one after another, which will not only affect their study at that time, but also affect their future study. Therefore, foreseeing mistakes and preventing them effectively can lay the foundation for revealing and eliminating them.
The explanation in class should be targeted.
When explaining in class, we should explain the possible problems of students in a targeted way. For easily confused concepts, students should be guided to make clear their differences and connections through comparison. For laws, students should be guided to find the exact source, distinguish the conditions and conclusions, understand their uses and scope of application, and pay attention to the problems in application. Teachers should show students the methods of revealing and eliminating mistakes so that students can identify and correct them. It is necessary to know students' situation in time through classroom questioning, analyze the reasons for students' wrong answers, give targeted explanations, and use negative knowledge to consolidate positive knowledge. Classroom practice is another way to find students' mistakes and solve problems in time. In short, through classroom teaching, we should not only teach students knowledge, but also let them learn to distinguish right from wrong, so as to correct their mistakes.
three
After-class comments should be summative.
We should carefully analyze the problems in students' homework, summarize typical mistakes and make comments. Through comments and appropriate review and summary, students can go through the process of debugging and correction again, and enhance their ability to identify and correct mistakes.