38:28

A Miraculous Proof (Ptolemy's Theorem) - Numberphile

12:53

Strange Spinning Tubes - Numberphile

1:21:41

Surprises from rubbing the wrong way - A public lecture by Tadashi Tokieda

58:28

Tadashi Tokieda - Magic with a ribbon, paperclips, rubber bands

14:29

New Recipe for Pi - Numberphile

1:01:12

Toy models, Tadashi Tokieda | LMS Popular Lectures 2008

41:55

Conway Checkers (proof) - Numberphile

1:01:13

A world from a sheet of paper - Tadashi Tokieda