开放性题目是指不具有定向的解题方法,且往往具有答案不固定或者条件不完备等特点。开放性题目在教材中较为少见,多被编在思考题内。虽然教学大纲对这类题目不作共同要求,也不作为考试的内容,但设计开放性题目对提高学生的数学素质,培养学生的思维能力具有的作用不可忽视。 Open title refers to the problem-solving method that does not have a direction, and often has the characteristics of the answer is not fixed or the conditions are not perfect. Open topics in the textbook is relatively rare, and more were compiled in the question. Although the syllabus does not make common demands on such topics, nor is it the content of examinations, the role of designing open topics in improving students 'mathematical qualities and developing students' thinking ability can not be ignored.