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怎样发现好的素材?怎样对素材进行数学化解剖并为我所用?这是对中考命题者数学眼光和数学智慧的最大考验。用睿智的目光审视我们熟悉的生活,你会觉得,数学之美就在我们身边。1试题呈现(2016年江西省中考数学第21题)如图1是一副创意卡通圆规,图2是其平面示意图,OA是支撑臂,OB是旋转臂,使用时,以点A为支撑点,铅笔芯端点B可绕点A旋转作出圆。
How to find good material? How to materialize the anatomy and math for me? This is the test of the senior high school entrance examination math and mathematical wisdom of the greatest test. With a wise look at our familiar life, you will feel that the beauty of mathematics is with us. 1 test questions (2016 Jiangxi province entrance exam math 21) as shown in Figure 1 is a creative cartoon compasses, Figure 2 is a schematic plan, OA is the support arm, OB is the rotating arm, the use of the point A as a support point , Pencil tip B can be rotated around point A to make a circle.