Hexaflexagons, A Fascinating Video by Mathemusician Vi Hart
Khan Academy fast-talking mathemusician Vi Hart has made Hexaflexagons, a fascinating video about the history and math behind six-sided flexagons (hexaflexagons) and how to make one of these flippable geometric pieces with a simple strip of paper. A second part video will be released soon by Hart.
Rusty Blazenhoff
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