Draw four lines beginning and ending at the gray points to break this square into pieces that can be rearranged into five identical squares. Bonus: Suppose you can use any number of lines that begin ...

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Below is a five-by-five chess board with the central square poked out. Place a knight, bishop, rook or queen in the upper-left corner and find a path that ends at the bottom-right corner that visits ...

Have you played the puzzle game Tangram? I remember, as a child, being fascinated by how just seven simple wooden triangles and other shapes could offer endless entertainment. Unlike LEGO, the Tangram ...

Take the pressure off of problem-solving with engaging thinking games that encourage students to work together to find ...

I’ve been out of school for decades, and I don’t spend my days solving equations (I’m more of a word person). Still, I like to think I have a solid grip on basic math: I can usually gauge whether a ...