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教学背景“神奇的带子”是北师大版五年级上册的教学内容。教材中的“神奇的带子”,也就是很多趣味数学读物上提到的莫比乌斯带。莫比乌斯带也叫莫比乌斯圈。莫比乌斯带是德国数学家莫比乌斯在1858年研究“四色定理”时偶然发现的一个副产品。莫比乌斯带已被作为“了解并欣赏的
Teaching background “magical tape” is the fifth edition of Beijing Normal University on the volume of teaching content. The “magic band” in the textbook is the Mobius band mentioned in many interesting math books. Mobius band also known as Mobius ring. Mobius strip is a by-product of the German mathematician Mobius, who stumbled upon when he studied the “four-color theorem” in 1858. Mobius band has been as "to understand and appreciate