Frank Murphy Books
Ben Franklin and the magic squares
By Murphy Frank
Shows how Benjamin Franklin, inventor, writer and scientist, created a puzzle called the magic square to keep from being bored while serving as clerk for the Pennsylvania Assembly. Includes step-by...
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Ben Franklin and the magic squares
By Murphy Frank
Shows how Benjamin Franklin, inventor, writer and scientist, created a puzzle called the magic square to keep from being bored while serving as clerk for the Pennsylvania Assembly. Includes step-by...
Read More