Learn about place value and practice addition and subtraction using number patterns on the grid. Perfect for helping children focus on important math concepts. Make A Splash 120 Floor Mat Game Features: Durable ocean-themed mat that measures 48" x 56" 3 inflatable cubes 64 frames and 64 markers 4 t-shaped frames that highlight 10 more/less and 1 more/less Activity Guide featuring CCSS-based activities