课堂是教学活动展开的主要场所。无论何时,课堂教学都是教师向学生传授知识、培养学生综合能力的主要途径。课堂教学效率是师生在单位时间内完成的教学任务,即投入的时间、精力与“产出”的关系,它是衡量课堂教学实效的一个重要指标。用尽量少的时间与精力让学生获得最大限度的学习效益的课堂教学,是减轻学生课业负担、提高自身素质的根本所在。向课堂要效率是教师们一直关注并执著追求 Classroom is the main venue for teaching activities. Whenever, classroom teaching is the main way for teachers to impart knowledge to students and develop students’ comprehensive abilities. The efficiency of classroom teaching is the task of teachers and students to complete the teaching within a unit of time, that is, the input time, energy and “output ”, it is an important indicator to measure the effectiveness of classroom teaching. With less time and energy for students to maximize the benefits of learning the classroom, is to reduce the burden on students, improve their own quality of the fundamental. To the classroom to efficiency is the teacher has been concerned and persistent pursuit