Use these to teach a conceptual understanding of place value. The disks can also be used to practice the four operations, and are especially useful in mastering regrouping. One class set contains ten individual student sets, which includes: (20) ones, (20) tens, (20) hundreds, (20) thousands, and (10) ten-thousands. Colors of disks are aligned with Primary Mathematics Standards & Common Core Editions and Math in Focus™. For use in grades 2-6.
* Also known as Number Disks, as seen in EngageNY.