This Instructional Activity is a part of the Lesson 4, Unit 4, Grade 7. For tactile learners, provide students with counters to represent the rings. Include 6 counters. The sixth counter should be transparent or a different color so that it can be atop one of the original 5 to indicate 20%. Consider providing premade double number lines for struggling students. Let's look at some additional information related to Cassandra's ring collection.