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试题的命制是数学评价中的一个难点,命题质量的好坏关系到能否客观反映教学效果和学生对知识技能的掌握程度.在命制试题时,常常会通过某一问题的适当拓展或延伸,发现其本质,改变题目原有的呈现形式,实现问题的创新,这些问题看上去熟悉,但又与原问题有区别,解决问题的方法却又是大致相同.当然,命制试题的过程也体现了研究性学习的过程.本文从一个常见的简单的问题入手,来看如何经过拓展或延伸,命制有新意的原创试题.
The test of the question is a difficult point in the evaluation of mathematics, the quality of the proposition is related to the ability to objectively reflect the teaching effectiveness and students’ mastery of knowledge and skills in the life test questions, often through a proper expansion of a problem or Extension, to find out its essence, to change the original presentation of the problem, to achieve the innovation of the problem, these problems seem to be familiar with, but with the original problem is different, the method of solving the problem is roughly the same .Of course, the process of life test But also embodies the process of research-based learning.This article starts from a common simple question and looks at how to create new original questions through extending or extending.