This can be a two day group work activity if it is used with another activity, or can be combined into a one day lesson. It contains seven different word problems that address direct variation, for example, comparing the price of pizzas to the number of pizzas ordered. Each group must complete the problems for their situation, including identifying the independent and dependent variables, the constant of variation, the direct variation equation, and then answer an extension question using the equation. Then, the next day the group must graph their direct variation equation and compare their problem from the previous day to a similar scenario to compare two different direct variations represented in different forms. I recommend using these materials over two days and including mini-lessons each day on finding the constant of variation and writing and direct variation equations and then on graphing and comparing direct variation relationships.