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笔者执教初中数学20余年,用过人教版老版本与新版本.两种版本变化较大,新版本突出了学以致用,更注重数学从生活中来,到生活中去的应用理念.但是,笔者在执教七(下)《数学》时,对教材中部分内容及编排有几点不同见解.一、“在同一平面内”这一前提是否可以淡化人教版七(下)《数学》第五章“相交线与平行线”教材以及教学用书中多次出现了“在同一平面内”这一前提.如教材第5页:在同一平面内,过一点有且只有一条直线与已知直线垂直.教材第11页(教学用书第17页),注释3,在同一
I coached the junior high school mathematics for more than 20 years, and used the old version and the new version of the PEP.The two versions changed a lot, and the new version highlighted the practical application of mathematics from life to life. , The author in the teaching of seven (under) “math”, the textbook part of the contents and arrangement of a few different views.A, “in the same plane ” this premise can dilute the PEP VII (below) Mathematics “fifth chapter” intersecting lines and parallel lines “teaching materials and teaching books appear many times ” in the same plane "as the premise.As the textbook Page 5: in the same plane, a little bit and Only one straight line is perpendicular to the known straight line. Textbook Page 11 (Teaching Book Page 17), Note 3, on the same