论文部分内容阅读
推理论证和作图是平几中容易产生分化的所在。培养和提高学生证明和作图的能力,是初二数学教学的重要任务。美国著名数学家、教育家乔治·波利亚提出了一个巧妙的解题策略:“回到定义中去。”我认为其寓意是很深刻的,决定在平几入门的教学中,努力使学生掌握基本概念,扎扎实实地打好基础,从而促进作图和证题能力的提高。以前教学中,我总觉得直线、线段、射线、角、相交线、平行线、垂线这些基本概念枯燥无味,没
Reasoning and mapping are a few of the most prone to differentiation. The ability to develop and enhance students' proof and mapping is an important task in mathematics teaching of the second grade. George Pollia, a famous American mathematician and educator, put forward a clever solution to the problem: “I went back to the definition.” I think its meaning is very profound and decided to try hard to make the students Grasp the basic concepts and lay a solid foundation to improve the ability of drawing and testimony. In previous teaching, I always felt that the basic concepts of straight lines, line segments, rays, angles, intersecting lines, parallel lines, and vertical lines were dull and boring