Enjoy this Free Printable Valentines Maze bundle. It is a fun and festive activity for All Ages with three levels of ...

Spread the loveLaughter is the best medicine, and there’s no better way to get your fourth-grade class laughing than sharing ...

Here’s a fairly recent twist on an old type of logic puzzle. A logician vacationing in the South Pacific finds himself on an island inhabited by the two proverbial groups of liars and truth ...

A version of this puzzle originally appeared in the February 1957 issue of Scientific American. We’d love to hear from you! E ...