一、研究背景理答是教师对学生回答问题后的反应和处理,是课堂对话的重要组成部分。它既是一种教学行为,更是一种评价行为。有效理答主要包括三个方面:有效果、有效率、有效益。有效果主要考察活动结果和预期目标的吻合度;有效率则是重点考虑活动结果与活动投入的比例关系;有效益则是有效性的最高体现,是在保证效果和效率的基础上,实现整体的和谐、可持续发展。近几年,在推进优质高效课堂的过程中,我们提出要构建“以学为主”的课堂, First, the research background Rational response is the teacher’s response to students and response to the problem, is an important part of the dialogue in the classroom. It is both a teaching act, but also a kind of evaluation behavior. Effective answer mainly includes three aspects: effective, efficient and effective. Effectiveness is mainly to examine the match between the results of the activities and the expected goals; efficiency is to focus on the proportional relationship between activity results and activities; benefit is the highest manifestation of effectiveness is based on the guarantee effect and efficiency, to achieve the whole The harmony and sustainable development. In recent years, in the process of promoting high quality and efficient classrooms, we have proposed that we should construct a classroom with “learning mainly”