Which image has four fewer? There are three sets of objects here which introduce subtraction concepts to beginning mathematicians (although the word subtraction and its symbol do not show up here). They count the number of objects in each set and check the one that has four fewer than the other. In this case, the set to the right is always the fewer set, so consider taking this a step further. Have scholars quantify each set with a number below it, add the subtraction symbol, and demonstrate numerically that there is a difference of four.