- Problemario escolar Trillas 1/ Educational Problems Trillas 1: Matematica Recreativa, Resolucion De Problemas, Mecanizaciones/ Recreational Math, Problem Solving, Routine (Spanish Edition) by Alicia Guadalupe Martinez Sanchez,  2004-07-09
 - Problemario escolar Trillas 4/ Educational Problems Trillas 4: Matematica Recreativa, Resolucion De Problemas, Mecanizaciones/ Recreational Math, Problem Solving, Routine (Spanish Edition) by Alicia Guadalupe Martinez Sanchez,  2004-08-06
 - Problemario escolar Trillas 2/ Educational Problems Trillas 2: Matematica Recreativa, Resolucion De Problemas, Mecanizaciones/ Recreational Math, Problem Solving, Routine (Spanish Edition) by Alicia Guadalupe Martinez Sanchez,  2004-07-13
 - Problemario escolar Trillas 3/ Educational Problems Trillas 3: Matematica Recreativa, Resolucion De Problemas, Mecanizaciones/ Recreational Math, Problem Solving, Routine (Spanish Edition) by Alicia Guadalupe Martinez Sanchez,  2004-07-13
 - Bibliography of Recreational Math 4ed Vo by William Schaaf,  1970
 - Bibliography of Recreational Math 4TH Edition Vo by William Schaaf,  1970
 - Bibliography of Recreational Math Volume 3 by William Schaaf,  1973
 - Bibliography of Recreational Math Volume 2 by SchaafWilliam,  1970
 - Games, devices and recreational math for upper grades by Lavona Walden McKelvy,  1955
 - Smarts Game Booklet: Elementary Math: Self-Motivational and Recreational Teaching Strategies by Lauretta Buchanan,  1998-10
 - Math can be fun: A collection of recreational mathematics material by Louis Grant Brandes,  1956
 - Summer camps: a fun way to reinforce math skills.(Report): An article from: Journal of Instructional Psychology by Mercedes Tichenor, Joan Plavchan,  2010-03-01
 - Journal of Recreational Mathematics (Volume 29, Number 2- 1998) 
 - You Failed Your Math Test, Comrade Einstein: Adventures and Misadventures of Young Mathematicians, Or Test Your Skills in Almost Recreational Mathematics 
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