This Instructional Activity is a part of the Lesson 20, Unit 1, Grade 7. Preparation (Before Instructional Time): Prepare sheets of grid paper, rulers, and furniture catalogs for student use. Measure the perimeter of the room to give to students beforehand. Today you will be applying your knowledge from working with scale drawings to create a floor plan for your idea of the dream classroom. Inform students they will be working in pairs to create their dream classroom. The principal is looking for ideas to create spaces conducive to enjoyable and increased learning.