Reinforce skills and concepts at home or on the go. Combines workbook content with dry erase materials and fun, game-like activities. Double-sided 11 x 17 lapboard works with dry erase markers and most crayons so you can easily write, erase, and practice again. Attached washable pen with no cap-loss design. Games/Manipulatives Type: Learning Mat Age Recommendation: Ages 3 and Up.Unit of Measure : Each