Lao Yang is very good at mathematics, and he likes to wander in the ocean of mathematics. This is an unusual feeling.

A class lasts 40 minutes. The time for Teacher Yang to talk about new knowledge is about 14 minutes, and most of the rest time is spent by students. In the process of students' study, I saw Mr. Yang keep asking questions. This is the process of students' inquiry learning. In this process, children learn to listen, express their ideas and ask questions. This is an interactive classroom for students. Returning the classroom to the students and changing the structure of the classroom is the direction of my efforts. In this way, students will be interested in learning.