Scientific American Head Games: 48 Confounding Word & Math Puzzles Knowledge Cards
Head Games includes 48 fact-filled cards per package, Knowledge Cards are a great source of condensed information–all in a deck the size of a pack of playing cards.
Each card features a confounding question on one side, with the answer on the other side. Sample question from Scientific American Head Games: break one word into two parts with completely different meanings. As one word, it is a noun for “a type of cloth.” The correct solution for the two words includes a verb meaning “adheres” and another verb meaning “attempt.”