1. Lead students to review basic calculation and lay a solid foundation. As a 3-5-minute exam, the practice of basic calculation is a good choice, which takes a short time, but it needs to be consolidated over time. The teacher can print the oral calculation card and send it to the students, that is, do it right, and keep abreast of the students' mastery of computing ability.
2. Lead students to review typical examples and strengthen key points. Students are exposed to many classic problems in their study, but some problems are not often encountered. After a period of time, students will gradually forget. In order to better understand what questions students need to master in this book, I have compiled 20 classic questions in this book, and you can take 1- 2 in each pre-class test. In this way, students can recall in time what methods and ideas these questions should be done in order to avoid confusion during the exam.
3. Guide students to recall half an example and deepen their understanding of the difficulties. There are many half examples in the textbook, and the knowledge points used to answer them do not appear in the front knowledge window, but are explained by the teacher in the process of leading the students to practice, which takes a relatively short time. This half example is generally difficult, so it is very necessary to review it regularly. Before class, the teacher can take time to review one and a half examples. Through repeated practice and explanation, students can gradually understand these difficult knowledge points.
? Generally speaking, pre-class test is an effective weapon to help teachers understand students' learning situation and improve students' mathematical ability. However, only by designing the content of the pre-class test can this weapon play its due role. After combing, I think the pre-class test should be designed according to the following standards:
1. Multiple questions. The pre-class test should not only examine students' computing ability or drawing ability, but also choose a variety of questions, so that students' abilities in all aspects can be comprehensively investigated without leaving a dead end.
2. Easy questions. The pre-class test time is very short, mainly focusing on review. Therefore, in the design of questions, teachers should pay attention to the fact that precision is more important than precision, and short and pithy questions can more clearly examine students' problems.
3. Heavy promotion. Before the exam, we should not only set simple oral calculation questions, but also set questions with a little thinking content, which not only plays the role of reviewing before class, but also plays the role of training students' thinking and guiding them to think independently. After students finish the pre-test questions, especially the key and difficult questions, the teacher should simply review and explain the questions, so as to find the omissions, fill in the blanks, let the students who didn't know much before keep up, and at the same time deepen their understanding.