MATH Area math game: Roll the dice and draw the area array on your own grid - first to fill it wins. Or 2 players choose a different colored pen each, use one grid and the player who cannot complete the last array is the loser.
"Multiplication color by number (lots of varieties) This is an online activity that would be great for early finishers, or for kids who need extra math practice!" :: Some of my young grands are just plain smart, and like fun stuff like this!
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