NRICH

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Created: 2007-07-27 12:34
Institution: Faculty of Education
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This collection contains 7 media items.

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Media items

A Card Spell


   2,912 views

Cards are dealt from a pack as they are spelt out in order. What order do they have to be in for this to work?

Collection: NRICH

Institution: Faculty of Education

Created: Mon 30 Jul 2007


Knot Chirality


   183 views

A quick demonstration of two knots - one chiral and one not.

Collection: NRICH

Institution: Faculty of Education

Created: Thu 9 Aug 2007


Tangle Manipulatives


   192 views

Some simple equipment tht makes it easier to manipulate tangles single-handedly. Also, something interesting happens when you repeat 'twist twist turn' indefinitely.

Collection: NRICH

Institution: Faculty of Education

Created: Thu 9 Aug 2007


The Conway Rope Trick


   2,977 views

A demonstration of Conway's Rational Tangles using skipping ropes. Tangles made this way can be placed in one to one correspondence with fractions.

Collection: NRICH

Institution: Faculty of Education

Created: Fri 27 Jul 2007


The Reidemeister Moves


   242 views

An introduction to the Reidemeister moves in Knot Theory.

Collection: NRICH

Institution: Faculty of Education

Created: Thu 9 Aug 2007


Turning Granny


   157 views

A suggestion that there might be something to learn about knots by looking at their symmetries. For example, you can distinguish a granny knot from a reef knot this way.

Collection: NRICH

Institution: Faculty of Education

Created: Thu 9 Aug 2007


What is a Knot


   185 views

A simple explanation of the idea of a mathematical knot.

Collection: NRICH

Institution: Faculty of Education

Created: Thu 9 Aug 2007