40 Easy-to-Make, Fun-to-Use Centers With Instant Reproducibles and Activities That Help Kids Practice Important Math Skills - Independently! Teachers will enrich center time with these easy-to-store "kits." As children use these 40 different skill-building games and activities, they practice and reinforce essential math concepts such as addition and subtraction, patterns and geometry, time and money, measurement and estimation, sorting and classifying, and more! Each box is easily created from readily available materials. Includes reproducible labels, easy-to-read student directions, and reproducible game boards and worksheets.