《新课程标准》指出,在数学教学中,“有效的数学学习活动不能依赖模仿与记忆,动手实践、自主探索与合作交流是学生学习数学的重要方式,学生的数学学习活动应当是一个生动活泼的、主动的和富有个性的过程”。新课改中提出把课堂学习的时空还给学生,让学生成为学习的真正主人。在初中数学教学中,课堂教学经常处于“教师问,学生答;教师讲,学生听;教师写,学生记”的“师授生受”的状态,课堂上仍然是以教师为主,“教师辛苦,学生痛 The New Curriculum Standard states that in mathematics teaching, ”effective mathematics learning activities can not rely on imitation and memory, hands-on practice, self-exploration and cooperation and exchange are important ways for students to learn mathematics. Students’ mathematics learning activities should be a vivid Lively, active and personal process. “ The new curriculum reform put forward the time and space of classroom learning back to students, so that students become the real master of learning. In junior high school mathematics teaching, classroom teaching is often in the state of ”teacher asks, student answer; teacher speaks, student listens; teacher writes, student records“ Lord, ”Teacher hard, student pain