A paperfolding paradise
The website of writer and paperfolding designer David Mitchell
page attempts to record what is known about the origin
and history of mathematical puzzles ie paper folding
puzzles which can only be solved using mathematics rather
than by trial and error manipulation. Please contact me
if you know any of this information is incorrect or if
you have any other information that should be added.
As far as I know a puzzle of this kind first appears in 'Diversions and Pastimes' by R M Abraham, which was first published by Constable and Constable in London in 1933.
The challenge is to find the length of the edge of a square which would be of the same area as the starting rectangle.