In this culminating lesson, students look at several examples of equations that represent important relationships from real-world situations. In the first activity, students briefly examine eight relationships, matching an equation and a table that represent the same relationship. To make the matches, students need to reason abstractly and quantitatively (MP2). 

In the following activities, each student works more closely with one of the relationships: interpreting the equation, continuing the table, and creating a graph. This gives students an opportunity to become an expert on one of these relationships and then use multiple representations to explain their understanding to others (MP3).