Books and Playthings Shop
Printed on high-quality paper and suitable for framing is this poster showing more than 300 solutions to the ...
Before 2023, the question, “Is there a single tile that only tiles the plane non-periodically?” had no known ...
All babies are math babies.
When your adorable math baby is wearing this hexagon onesie, the two of you will ...
Bright and inviting wooden shape puzzle with nine distinct hexagons—chunky and easy for small hands to work with.