Venue: Junior One Office

Participants: all members of the math group.

Main holder: Zhao Liting

Recorder: Ji Hongxiang

Activity process record:

The content of the course is "Images and Properties of Quadratic Function". The process is to review the general formula of quadratic function, review the drawing method of images of linear function and inverse proportional function, explore the drawing method of images of quadratic function, give concepts and properties, practice, summarize and do homework.

Lecture evaluation:

Zhang Yongqing: When reviewing the image drawing method of inverse proportional function, what line should be called and the range of X should be explained. When listing, we should start from the middle and take it from both sides. At the same time, students should do their own calculations.

Zhang Yuqiang: In the graphic drawing of quadratic function, it is best for teachers to explain while operating, so that students can have a correct imitation object. When students' images are not smooth, let them know why.

Yang Jing: I spent too much time in this part of the painting, and the later exercises were a little out of touch.

Zhang Jianguo: What is the connection between the two images, y=X2 and Y=-X2? Without comparison, how can it be concluded that the positive and negative of A determines the size of the opening?

Zhuang Xingguang: After teacher Zhang Can lists the table, let the students find the symmetry of numbers and the nonnegativity of Y in time, but it is best to echo them in the later exercises.