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开放型问题是相对于有明确条件和明确结论的封闭型问题而言的,它是条件或结论给定不完全、答案不唯一的一类问题.这类试题已成为近年中考的热点,重在考查同学们分析、探索能力以及思维的发散性,但难度适中.根据其特征大致可分为:条件开放型、结论开放型、方法开放型和编制开放型等四类.在开放性的题目时,需要我们的学生先进行观察、试验、类比、归纳、猜测出结论或条件,然后严格证明;同时,通常要结合以下数学思想方法:分类讨
Open-ended question is a closed-ended question with definite conditions and definite conclusion, which is a kind of problem that the condition or conclusion is given incompletely and the answer is not unique. Such questions have become the focus of senior high school entrance examination in recent years, To examine students’ abilities to analyze and explore their abilities and their divergence of thinking, it is difficult to find a suitable mode of action, which can be roughly divided into four categories: open-ended, open-ended, open-ended and open-ended. , We need students to observe, test, analogy, induction, guess the conclusion or condition, and then strictly proof; the same time, usually with the following mathematical method: