高效课堂是指教师在有限的单位教学时间里最大限度的,以最高的效率让学生接受和掌握目标知识,改善学生接受和理解知识的速度,从而提高学生分析问题和解决问题的能力的课堂活动。高效的课堂离不开科学合理的教学设计,教师必须认真研究教材、深挖教材,做到备教材的 Efficient classroom refers to the teacher in a limited unit of teaching time to the maximum, with the highest efficiency to enable students to accept and grasp the target knowledge, improve students ’acceptance and understanding of knowledge, thereby enhancing students’ ability to analyze problems and solve problems classroom activities . Efficient classroom is inseparable from the scientific and rational teaching design, teachers must carefully study materials, digging textbooks, prepare teaching materials