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Knots

Knots. Holy trefoils, math fans!. The Inca & the Quipus. The Inca used quipus --colored strings with carefully placed knots-- to keep records of their trade with each other and with other tribes. A quipus. Knots and Art. Celtic artwork uses knots. Knots and Sailing.

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Knots

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  1. Knots Holy trefoils, math fans!

  2. The Inca & the Quipus • The Inca used quipus --colored strings with carefully placed knots-- to keep records of their trade with each other and with other tribes. A quipus

  3. Knots and Art • Celtic artwork uses knots.

  4. Knots and Sailing • Any good sailor can tie lots of different knots. Bowline Knot (pronounced Boh-Lin) Reef Knot Angler’s Knot

  5. What is a knot? • If you know how to tie a shoe, then you know what a knot is. • The only difference between this knot and a knot mathematically is that we connect the ends.

  6. Are these knots the same?Or, are these knots different? • What do YOU think? Knot 1 Knot 2

  7. When are two knots the same? • Two knots are equivalent if you can deform one to the other without cutting the knot open.

  8. Are these knots the same? • Can you use your rope to change one into the other?

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