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在教授复数这一章时,经常会遇到虚系数的一元二次方程的问题,学生在处理时容易直接迁移实系数的一元二次方程的解法,导致错误.产生错误的主要原因是学生对虚数的性质不能灵活掌握.所以,在教授新课时,可以采用启发式教学,设计一系列的问题引导学生学会比较发现,从而找到问题的关键.1.实数怎样表示?实数能比较大小吗?实数的大小怎么比较的?2.复数是怎样表示的?虚数怎样表示?虚数能比较大
When teaching this chapter, we often encounter the problem of the quadratic equation of the imaginary coefficient, which is easy to transfer directly to the solution of the quadratic equation of the real coefficient when students deal with the problem. The main reason for the error is that students’ Therefore, when teaching a new class, heuristic teaching can be used to design a series of questions to guide students to learn more about the problems and find the key to the problem.1. How do real numbers mean? Can real numbers be larger? Real numbers How to compare the size? 2. What is the complex number? How to represent the imaginary? The imaginary number can be relatively large