开放型习题是相对有明确条件和明确结论的封闭式习题而言的,是指题目的条件不完备或结论不确定的习题。练习是数学教学重要的组成部分,恰到好处的习题,不仅能巩固知识,形成技能,而且能启发思维,培养能力。在教学过程中,除注意增加变式题、综合题外,适当设计一些开放型习题,可以培养学生思维的深刻性和灵活性,克服学生思维的呆板性。 Open-type exercises are relatively explicit conditions and clear conclusions of the closed-ended exercises in terms of the conditions of the problem is incomplete or the conclusion of the problem of uncertainty. Exercise is an important part of mathematics teaching, just the right exercises, not only to consolidate knowledge, skills, and can inspire thinking and develop ability. In the process of teaching, in addition to pay attention to increase the variant questions, comprehensive questions, the appropriate design of some open-type exercises, you can cultivate the profound and flexible thinking of students to overcome the rigid thinking of students.