Start spinning! Initially working as a whole class, ask one student to pick a number, for example 10. Pose the question: What two numbers combine to equal 10? Students pick a number along the edge, like 9, then set the plus tab at this number. What number is needed to add to 9 to equal 10? Students move the inner numbered circle around so that the number 1 fits inside the plus sign. The number has been found; an equation has been written (9+1=10). Try additional examples; then break the class into teams of 2 or 4 and have students practice their addition facts while mastering how to work with their math wheels!