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立休几何的研究对象是空间图形。由于空间图形不能完全放在同一平面内,加之学生缺乏空间想象能力,初学时感到十分困难,所以在教学中必须引导学生观察,培养学生的观察能力,进而丰富学生的空间想象能力。现就立几教学中观察能力的培养谈几点体会。一、明确观察的目的性人们总是有目的有选择地对事物进行观察的,教学中应使学生的注意力集中在与目的有关的部分,不为其他刺激所吸引,通过观察进而抓住事物的本质属性。例如异面直线对初学者来说是比较抽象的概念,教学时必须有目的地引导学生观察空间两条直线的相互位置关系,判断它们能否在同一平面内。可以从学生
Li Hing geometric object of study is the space graphics. Because the space graphics can not be completely on the same plane, and students lack the space imagination ability, it is very difficult for them to begin their studies. Therefore, they must guide students to observe and cultivate the students 'observation ability in order to enrich students' spatial imagination. Now on the establishment of several teaching observation ability to talk about a few experiences. First, the purpose of a clear observation People always have the purpose of selective observation of things, teaching students should focus on the purpose of the relevant part, not to be attracted to other stimuli, through observation and then seize things The essential attribute. For example, a straight line for beginners abstraction is a more abstract concept, teaching students must purposely guide students to observe the relationship between the two lines of space, to determine whether they can be in the same plane. Available from students