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The Möbius Strip

A loop of paper with only one side and one edge

A sheet of paper has two sides. Obviously. Yet one twist and a bit of tape leave a paper loop with only one. How?

You'll find out

  • What a pen's line does on this loop
  • Why scissors can't cut it in two
  • Where this loop hides in plain sight

Why it matters

A strip of paper is enough to break your sense of inside and outside, and its picture is on countless packages.

About 4 min7 interactive slides · 5 questionsLesson 142 · Zone 16

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