3D, 2D, 1D by David A. Adler 666 Jellybeans! All That? An Introduction to Algebra by Malcolm E. Weiss Angles are Easy as Pie by Robert Froman Area by Jane Jonas Srivastava Averages by Jane Jonas Srivastava Base Five by David A. Adler Bigger and Smaller by Robert Froman Binary Numbers by Clyde Watson Building Tables on Tables: A Book about Multiplication by John V. Trivett Circles by Mindel and Harry Sitomer Computers by Jane Jonas Srivastava The Ellipse by Mannis Charosh Estimation by Charles F. Linn Exploring Triangles: Paper-Folding Geometry by Jo Phillips Fractions are Parts of Things by J. Richard Dennis A Game of Functions by Robert Froman Graph Games by Frédérique and Papy The Greatest Guessing Game: A Book about Dividing by Robert Froman How Did Numbers Begin? by Mindel and Harry Sitomer How Little and How Much: A Book about Scales by Franklyn M. Branley Less than Nothing is Really Something by Robert Froman Lines, Segments, Polygons by Mindel and Harry Sitomer Long, Short, High, Low, Thin, Wide by James T. Fey Maps, Tracks, and the Bridges of Konigsberg: A Book about Networks by Michael Holt Mathematical Games for One or Two by Mannis Charosh Measure with Metric by Franklyn M. Branley Number Ideas through Pictures by Mannis Charosh Odds and Evens by Thomas C. O'Brien Probability by Charles F. Linn Right Angles: Paper-Folding Geometry by Jo Phillips Roman Numerals by David A. Adler Rubber Bands, Baseballs and Doughnuts: A Book about Topology by Robert Froman Shadow Geometry by Daphne Harwood Trivett Solomon Grundy, Born on Oneday: A Finite Arithmetic Puzzle by Malcolm E. Weiss Spirals by Mindel and Harry Sitomer Statistics by Jane Jonas Srivastava Straight Lines, Parallel Lines, Perpendicular Lines by Mannis Charosh Venn Diagrams by Robert Froman Weighing & Balancing by Jane Jonas Srivastava What is Symmetry? by Mindel and Harry Sitomer Yes-No; Stop-Go: Some Patterns in Mathematical Logic by Judith L. Gersting and Joseph E. Kuczkowski Zero is not Nothing by Mindel and Harry Sitomer 42 books in the series