This Instructional Activity is a part of the Lesson 4, Unit 1, Grade 7. Students will work on the following example independently for 10 minutes. Then, students may collaborate with a partner or small group of classmates to discuss answers for 5 minutes. During this time students are to compare, critique the work that was done individually, and work together to come up with a presentable solution. If all students completed the task individually, then they should check each other's work for accuracy and completeness.