一、作业设计讲究精度、坡度、自由度据对某校同一班级学生完成作业时间的调查发现,同样的作业量,完成时间的差异竟达四五倍。进一步分析表明,学生完成作业时间的差异主要是能力和习惯的差异,在完成作业的过程中,有的学生会 First, the job design pay attention to accuracy, slope, degree of freedom According to a school the same class students to complete the operation time survey found that the same workload, the completion time difference as many as four or five times. Further analysis shows that the main difference between students ’completion of homework time is the difference of ability and habit. In the process of completing homework, some students’