开放性试题背景新颖立意深刻、内容丰富.基本特征是:题目的条件不完备,或者结论不确定,或者解题思路因人而异、灵活多样.中学数学开放性问题在内容上具有广泛性、新颖性;在形式上具有动态性、多样性;在解决上具有探索性、发散性.本文通过分析、研究初中数学开放性问题的主要类型,进而探 The open characteristic of the open examination questions is new and profound in content, rich in content.The basic characteristics are: the conditions of the subject are incomplete, or the conclusion is indefinable, or the thinking of solving the problem varies from person to person, flexible and diverse.The problem of the openness of mathematics in middle school is broad in contents, Novelty, dynamic and diversity in form, exploratory and divergent in solving.This paper analyzes the main types of open question of mathematics in junior high school,