Math Coachs Corner: CRA for Composing and Decomposing Numbers. Concrete practice for composing and decomposing numbers from 5 to Differentiate by choosing different target numbers to meet student needs.

Number Combinations: Using Number Bonds to... by Math Coach's Corner | Teachers Pay Teachers

Unifix cubes print and play number combinations and race game mats.

Using Number Bracelets to Develop Number Sense. Like dot cards and rekenreks, number bracelets provide concrete practice for number combinations and composing/decomposing numbers. Check out this post for instructions for making and using number bracelets.