Grade K Math: Compose and Decompose K.NBT.1


This Common Core video features Kindergarten students from Watervliet, NY using objects to compose and decompose numbers from 11-16 and drawing equations to demonstrate their understanding. The lesson demonstrates Instructional Shift 4: Deep Understanding; Standard for Mathematical Practice 6: Attend to Precision; and Standard for Mathematical Practice 7: Look for and make use of structure. Students use a familiar tool, a ten frame, to compose and decompose numbers bigger than 10.