The Edu Clings Silicone Center: Number Bonds will support students as they work with foundational addition and subtraction skills such as composing and decomposing numbers, part part whole, and making 10. This easy to clean, 21 piece resource provides a revolutionary hands on learning experience for both at home or in the classroom. Each dry erase mat measures 8.5 inches x 11 inches, with each manipulative measuring approximately 1.97 inches in diameter. Edu Clings are the perfect hands on learning manipulatives. They encourage discovery and deeper understanding at home and in the classroom. The innovative silicone material is easy to clean, quiet, durable, and clings to all nonporous surfaces without leaving any residue. It's dishwasher safe so you can sanitize regularly and easily. You can even write on it with dry erase markers! Warm water and a touch of dish soap will always make it cling like new. From individual center activities to larger manipulatives that are perfect for whiteboards, Edu Clings will revolutionize hands on learning at home and in the classroom.