Cards introduce basic skills with hands-on practice. Fronts feature numbers, number value concepts, and numeral formation. Backs feature a variety of activities for number recognition, number order, counting objects, and printing. Writes easy, wipes clean with a tissue. Use again and again. Fun for play in any setting: homes, classrooms, childcare, and travel. Durable and reusable. Convenient storage box. 32 two-sided cards per set, 4.5" x 6.5". Sold as 3 sets.