Math Concepts: This is an adding machine! It is super simple to make and fun for the kids to learn about adding/composing numbers. It will help those kids understand the equal sign in a way they haven't experienced before.
Unifix cubes are a concrete representation of addition/number bonds. Building the bond with the Unifix cubes is what develops number sense. Great use for flash cards instead of looking for just memorization
Game: Each player takes a turn to roll the die and crosses out the matching number. The first player to cross out all his numbers wins. For a decomposing numbers game: roll dice or a number cube and cross out two numbers that make that number.