On each card, students first determine the slope shown in 2 representations (table, graph, set of ordered pairs, equation*). Next, they either add, subtract, multiply or divide these slope values (based on what their card says to do) to see if the result matches the check number in the lower right corner of the card. Chances are if the check number matches, the rates of change were found correctly! This activity is self-checking, giving students that instant feedback they love. The printable ver