Mathematical recreationsSee also what's at Wikipedia, your library, or elsewhere.
Broader term:Related term:Used for: Mathematical puzzles
 Number games
 Recreational mathematics
 Recreations, Mathematical

Filed under: Mathematical recreations Paper Folding for the Mathematics Class (Washington: National Council of Teachers of Mathematics, c1957), by Donovan A. Johnson (page images at HathiTrust)
 Amusements in Mathematics, by Henry Ernest Dudeney (PDF at djm.cc)
 The Mathemagician and the Pied Puzzler: A Collection in Tribute to Martin Gardner, ed. by Elwyn Berklekamp and Tom Rodgers (PDF at g4g4.com)
 The Puzzling World of Polyhedral Dissections, by Stewart T. Coffin (illustrated HTML at johnrausch.com)
 Recreations in Mathematics (New York: D. Van Nostrand Company, c1917), by H. E. Licks (PDF at djm.cc)
 A ScrapBook of Elementary Mathematics, by William Frank White (page images at Cornell)
 A Tangled Tale (London: Macmillan and Co., 1885), by Lewis Carroll, illust. by A. B. Frost (Gutenberg text and illustrated HTML)
Items below (if any) are from related and broader terms.
Filed under: Magic squares
Filed under: Scientific recreations 