Unknots, Reidemeister moves and crossing numbers at the Curious Minds Club (St Thomas of Canterbury Primary School, 15 November 2019)

Another week exploring Knot Theory. The first activity was to look at a page of knots and work out which ones were actually unknots. Some children could do this by looking at the knot, and other children made the knot and manipulated it. The second activity was to learn the Reidemeister moves then look at some pairs of knots and decide which Reidemeister move had been used to turn picture one into picture two. The last activity was to learn about crossing numbers, and to look at pictures of knots and see if they could be simplified in order to decide what their true crossing number was.


We ended the session by playing the Knot Game.

knot game