Perplexing Paperclips - Numberphile
12:53
Strange Spinning Tubes - Numberphile
9:50
A Hole in a Hole in a Hole - Numberphile
58:28
Tadashi Tokieda - Magic with a ribbon, paperclips, rubber bands
16:26
Earthquakes, Circles and Spheres - Numberphile
17:24
The unexpected probability result confusing everyone
18:53
Cones are MESSED UP - Numberphile
13:04
How thick is a three-sided coin?
33:06