一、问题提出的背景对于课堂练习,我们一线的数学教师一直有着这样的困惑:特级教师的课堂上往往没有课堂练习,却能引发听课者的阵阵赞叹,那我们普通教师是不是每节数学课都一定要安排练习?如果要安排练习,那么练习的时间是不是一定要有规定,如每课10分钟,还是应该只重质,不重量?正好九月份刚开学,年级组内就举行“小请客,转流转”活动。有两位老师不约而同地执教了《梯形的面积计算》,并且都选择了《课课练》上的一道习题,把 First, the background of the problem raised For the class practice, our front-line math teachers have always had such a confusion: super-class teachers often do not practice in the classroom, but it can provoke bursts of praise listeners, then our ordinary teacher is not every math If you want to arrange practice, then the exercise time is not necessarily required, such as 10 minutes per lesson, or should only heavy quality, weight? Just in September just opened, the grade group held on the “Small treat, transfer transfer ” activities. Two teachers invariably coached “Area Calculation of Trapezoid,” and they all chose an exercise in “Lesson Practice”