一、注重课后作业的时效性、针对性和层次性作业的布置必须要有针对性,教师应精心选题复现本课时学生所学知识的检测并巩固、深化前期难点,这样教师才能从作业中获得反馈信息,以帮助教师对自己的教学活动作出及时的、相应的调整,使得布置课后作业成为有效的一种教学手段。作业的目的在于反馈,反馈的关键在于及时和有效,因此作业的布置还要及时,作业 First, pay attention to the time-based homework, targeted and hierarchical layout of the operation must be targeted, teachers should be carefully selected topics recurring this lesson students learn the knowledge and consolidation, deepening the difficulties in the early, so that teachers can from Work to obtain feedback information to help teachers make their own teaching activities in a timely manner, the corresponding adjustment, making the placement of homework become an effective teaching method. The purpose of the job is to feedback, the key to feedback is timely and effective, so the layout of the job should be timely, homework