科学合理地设计作业,让数学习题更生动,是教师作业设计努力的目标。作业设计先要制定作业目标,但作业目标的制定应该是动态的,既要从教材和教学目标出发,又要兼顾学生的学情。唯有此,设计的数学习题才能更科学合理,符合实际,具有针对性;才能使数学习题与作业目标相匹配,具有解释性。本文通过课堂教学和学生练习中的问题谈科学 Scientific and rational design homework, mathematics exercises more vivid, is the goal of homework design efforts. Job design to set the homework goals, but the goal of the operation should be dynamic, it is necessary from the teaching materials and teaching objectives, but also take into account the students’ learning. Only in this way, the design of mathematical exercises can be more scientific and rational, in line with the actual, targeted; in order to make the math exercises and job objectives match, explanatory. This article talks about science through classroom teaching and student practice questions