类比物理上的机械效率=有用功/总功,那么不难理解教学效率=教学效果/教学投入,或教学效率=有效教学时间/实际教学时间。即有效教学时间是使单位时间的教学效益最大。小学教师应该树立有效教学的观念。现代教育研究表明,有效教学是建立在儿童原有经验基础上,没有儿童的主动参与和原有经验的建构,脱离儿童主动参与的灌输,都是低效学习。可见,学生主动参与学习过程是学好书本知识的关 It is not hard to understand teaching efficiency = teaching effect / teaching input, or teaching efficiency = effective teaching time / actual teaching time. Effective teaching time is to teach the most effective unit of time. Primary school teachers should establish the concept of effective teaching. Modern education research shows that effective teaching is based on the original experience of children, without the active participation of children and the construction of original experience, and it is inefficient to learn from the active participation of children. Visible, students take the initiative to participate in the learning process is a good knowledge of the book off