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估算简而言之就是粗略的计算,是一种在对数学问题进行深入理解的基础上开展的具有目的性的、快速得出近似答案的计算,通过对问题中涉及的数值进行适度的扩大或缩小,并计算结果估,从而估计出答案的大致范围,其实质上是一种利用数学知识来解决实际问题的数学意识,跳出了常规数学解题的复杂的逻辑推理过程,直击问题的关键,直接体现数学素养的高低。本文主要在分析高中数学课堂中估算教学的应用种类,探讨如何有效在教学中运用估算教学。
In short, the calculation is a rough calculation. It is a calculated calculation that has a quick and objective approximation based on a thorough understanding of mathematical problems. By appropriately expanding the numerical values involved in the problem or Reduce and estimate the result to estimate the approximate scope of the answer. In essence, it is a kind of mathematical consciousness which uses mathematics knowledge to solve practical problems, jumps out the complicated logic reasoning process of conventional mathematical problem solving, Directly reflect the level of mathematical literacy. This article mainly analyzes the application of estimating teaching in high school mathematics classroom and discusses how to use the teaching of estimation effectively.