论文部分内容阅读
培养学生的空间想像能力,是立体几何教学的一项重要任务。我认为,空间想象能力主要包括三个方面:对空间图形的观察能力、绘图能力和分析思考能力。下面谈谈在立体几何教学中培养学生的空间想象能力的一些粗浅体会。第一、培养学生的观察能力一、引导学生去观察讲异面直线的概念时,可以先提出这样一个问题:两条(不重合的)直线若不相交.是否一定平行?不少学生可能回答:一定平行。这时可让学生观察教室里的一些直线之间的关系,引导他们发现:
Cultivating students’ spatial imagination is an important task in the teaching of three-dimensional geometry. In my opinion, the spatial imagination ability mainly includes three aspects: the ability to observe spatial graphics, drawing ability, and analytical thinking. Let’s talk about some superficial experiences in cultivating students’ space imagination ability in the teaching of solid geometry. First, to develop students’ observation ability. First, to guide students to observe the concept of speaking different lines, you can first ask the question: if two (non-coincident) lines do not intersect, are they necessarily parallel? Many students may answer : It must be parallel. This allows students to observe the relationship between the lines in the classroom and guide them to discover: