And they're off! Working in pairs, young mathematicians roll dice to see who can fill in their double ten-frames first. When students finally fill in their arrays, they create addition number sentences that represent their rolls, helping to reinforce the underlying math concepts. A simple activity that offers all primary grade students an opportunity to strengthen their number sense. Perform this activity once as a whole class or as part of rotations before offering it as an option for early finishers during math lessons.