Abstract: As an experimental course, Experiment of Optometry Theory and Methods aims to develop students' skilled ability and solid performance in professional practice. In traditional teaching mode, students have limited operation time except for classroom explanation, and it is difficult to evaluate and guide each student's operation ability and mastery level in class. Based on the “four-element divided class” mixing teaching mode of Chaoxing learning App, students complete most online study before class, conduct classroom teaching in accordance with concentrated teaching, practical operation, group discussion and classroom question-answering, and conduct evaluation and feedback with the help of the platform after class, thus optimizing the teaching links and improving the teaching efficiency. It greatly improves students' independent learning ability and stimulates their initiative and enthusiasm in learning. The main knowledge module is integrated with the ideological and political elements of the course, so as to cultivate students' solid professional skills in optometry, and pay attention to the cultivation of students' ideological and moral character. The teaching mode of mixed and divided class is beneficial to better cultivate students' interest in learning, practical ability and stimulate their initiative in learning.

Key words: Mixed and divided class, Course ideology and politics, Teaching mode