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一、选题设想学生正经历高三一轮复习,各类公式已经复习过的前提下,考虑到学生对于三角问题已有的了解,如何选择更优的方法来正确、快速的解题就是学生的“必修课”了。三角函数求值的题型,从认知结构上说,学生很容易理解题意,动手解题,但是使用方程组的思想还是变角的思想来解题更加便捷呢?怎样帮助他们在解决三角函数求值问题时,正确深入地理解题意,有效准确地选择解题方法呢?在建构主义理论的指导下,我以自主学习为前提,以探
First, the choice of topics Imagine students are undergoing the third year of high school review, all kinds of formulas have been reviewed under the premise of taking into account the students already know about the triangle problem, how to choose a better way to correct, fast problem-solving is the students “Compulsory ” the. Trigonometric function evaluation of the question, from the cognitive structure, the students can easily understand the problem, hands-on solution to the problem, but the idea of using equations or angle of thinking to solve the problem more convenient? How to help them solve the triangle Function evaluation problem, the correct and in-depth understanding of the problem, effective and accurate choice of problem-solving method? Constructivism theory under the guidance of self-learning as the premise, to explore