在现代数学教学中，传统教学手段和现代教学手段并存．在这众多的教学手段中，教师在选择时应遵循的原则是：（1）有利于理解原则；（2）手段简单化原则；（3）考虑学生的年龄特点原则；（4）传统手段和现代手段互补原则．%In modern mathematics teaching and learning, both traditional means and modern means coexist. How to choose in these means? In this paper, four suggestions were put forward. They were: understandable; simplification; students' age characteristic; complement of traditional and modern means.
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