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用一方形纸折出飞鸟、驼背人、乌篷船、宝塔、帽子等物是青少年学生十分喜爱的儿童游戏,如果利用他们熟悉的折纸图案来引出一些数学问题容易引起学生的好奇心,增强他们的观察联想和逻辑推理能力。本文就初中数学教学中如何利用折纸中的几何图案进行启发式教学作点初步的探讨。 例1 图1为驼背纸人的侧面与正背面平展图,驼背纸人的两袖(手)未完成前的图案为图2所示,由折法可知:
Using a square paper to fold out birds, humpbacks, pontoons, pagodas, hats, etc. is a children’s game that is very popular with young students. If they use their familiar origami patterns to elicit some mathematical problems, they will easily arouse students’ curiosity and enhance them. Observe association and logical reasoning skills. This paper discusses how to use heuristic teaching in origami teaching in junior middle school mathematics teaching. Example 1 Figure 1 shows the lateral and frontal views of the humpback paper man. The figure of the humpback paperman’s sleeves (hands) before completion is shown in Figure 2. It can be known from the folding method: