"How many days a week" is the second lesson of Unit 7 in the first volume of the second grade of primary school mathematics published by Beijing Normal University. The main teaching content is to learn the multiplication formula of 7. According to the design intention of the textbook, this course aims to let students go through the compilation process of multiplication formula by creating specific problem situations, master the multiplication formula of 7 in the compilation process, and use the multiplication formula of 7 to carry out multiplication calculation, thus solving some simple multiplication problems.

In the previous study, middle school students have mastered the multiplication formula of 2, 3, 4, 5 and 6 and the division of 2-5 in the table. Students also have a good understanding of the compilation process of multiplication formulas. Based on the above reasons, I personally think that students are fully capable of writing the multiplication formula of 7 independently, and teachers only need to give appropriate guidance.

In teaching, I didn't completely let go, but only after sorting out the first six formulas did I let students explore the last three formulas independently. Although this takes care of students with weak autonomy, it affects the enthusiasm of students with strong autonomy to explore. I will take this into account in my future teaching.

Judging from the transmission of teaching content, this is a class without suspense. It can even be said that students can recite the multiplication formula of 7 without the guidance of teachers. So what is the significance of this course? I think our understanding of multiplication formula should not be limited to memorizing, but should have a deeper understanding of the meaning of multiplication formula and how to apply it to multiplication and division. In this lesson, I want to focus on the significance of multiplication formula and the convenience of using multiplication formula to calculate. Therefore, I designed three levels of exercises to express my creativity. Due to the lack of time budget in advance, the exercises in level 3 were not presented.

Judging from the classroom effect, this is a class without ups and downs. From the aspect of implementation, it is not step by step. This is mainly due to inadequate preparation of lessons, coupled with the poor mental state of teachers, which presents participants with a loose teaching state.

Judging from the teaching process, this course is not meticulous in every link. The so-called "no grinding, no plastic", the teaching research of the calculation course has just begun. I will seriously ponder and study hard in the future teaching and carry out the discussion of the calculation course to the end.