This Instructional Activity is a part of the Lesson 2, Unit 5, Grade 8. The activity calls back to a previous lesson where students filled out tables of values from input-output diagrams. Here, students determine if a rule is describing the same function but with different words, giving them an opportunity to look for and make use of the structure of a function. Students are given 3 different input-output diagrams and need to determine which rules could describe the same function. A key point in this activity is that context plays an important role.