Time It! Addition & Subtraction (Active Minds) : This book stimulates young minds with timed exercises in addition and subtraction. Will encourage you to challenge relatives and friends to add and subtract faster than you. Contains 24 pages of timed exercises, fun facts, games, puzzles, jokes, and other awesome activities. Wipe-off surface can be used over and over again! Includes wipe-off marker.
|Niños y Jóvenes||Matemáticas|