Riddled with rhymes and rapt with wordplay, this deck of Knowledge Cards offers 48 enigmas that function as a brain gym in a box. With science revealing cognitive exercise to be as necessary and life-enhancing as physical exertion, poet and educator Emmanuel Williams created this collection of conundrums guaranteed to get your gray matter in gear. Solving riddles (answers are provided on the backs of the cards) will unwind your mind and stretch your imagination.