论文部分内容阅读
创新题能有效地考查同学们的创新意识和自学能力,体现新课改的要求.现采撷几道围绕有理数设计的创新题并加以归类浅析,旨在探索解题规律,对大家有所启发.一、开放型例1写出一个比0小的数:___.分析:根据有理数的大小比较法则中的“0大于一切负数”可知,任意一个负数都是符合题意的.解:本题答案不唯一,如-2、-3、-1.5等.规律总结:开放型问题的特点是在一定的条件下无结论或结论不明确,需从题目已知的条件入手,充分挖掘、分析、推理去确定符合条件的结果.
The innovative questions can effectively examine the students’ innovative awareness and self-learning ability and reflect the requirements of the new curriculum reform. Several innovation questions that are based around rational numbers have been adopted and categorized to explore the law of problem solving. Inspired. First, Open Example 1 writes a number smaller than 0: __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ : The answer to this question is not unique, such as -2, -3, -1.5, etc. The rule is summarized: The characteristics of the open-type problem is that under certain conditions, there is no conclusion or the conclusion is not clear. It is necessary to start from the conditions of the known topic and fully explore. Analyze and reason to determine the outcome that meets the conditions.