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本文是根据M.H.特罗别茨哥依的“在几何教学中培养学生的技术发明創造能力”一文編譯而成。这里介紹了在教学中利用簡单的几何知識,启发学生亲手制作几种簡单的仪器。为了节省篇幅,文中所提到的几种仪器,只画出了图,未作詳細的說明。Ⅰ.定心器在几何教学中或者在生产实践中,常常会遇到这样的問題,即已知某段圆弧,如何确定这个圓弧所在的圓的圆心,或者要求确定一个圓盘的圓心、一个圓柱形木块的圓截面圓心等等。对于这类要求确定圓心的問題,在几何教学中就可以利用已学过的几何知識启发学生亲手制作出种种“定心器”。 (1) 图1是根据角的平分綫的性貭而制作的“对
This article is based on the article “Developing Students’ Technological Invention and Creation Ability in Geometry Teaching” by M. H. Trobedziegoi. Here we introduce the use of simple geometric knowledge in teaching to inspire students to make several simple instruments. In order to save space, several instruments mentioned in the article have drawn only the figures and have not been described in detail. I. The centering device often encounters such problems in geometry teaching or in production practice as knowing a section of an arc, how to determine the center of the circle where the arc is located, or requesting to determine the center of a disk. , the circular cross section of a cylindrical block, etc. For this kind of requirement to determine the center of the circle, in the geometry teaching can be used to learn the knowledge of geometry to inspire students to make a variety of “centering device.” (1) Fig. 1 is a pair of figures produced according to the nature of the angle bisector.