Description: In Topic E, students solve problems with perimeter and area. Lesson 23 focuses on solving a variety of word problems involving perimeter. This provides students an opportunity to use multiplication and division strategies to solve problems about perimeter. Students use rectangles and circles to measure, create, and analyze robots and environments for the robots using specified perimeter measurements in Lessons 24 through 27. They reason about the different whole number side lengths that may be produced. Students return to problem solving in Lessons 28 and 29, this time working with a variety of word problems involving both area and perimeter. In Lesson 30, students further develop analyzing and critiquing skills.*Teacher Advisor is 100% free.