CAD - Floor Planner Residential and Commercial

Introduction to Computer Aided Design in Real Estate using Floor Planner - a free to use software.
I assign a house with 4 rooms to 6th graders, more complicated requirements to 7th graders, and a commercial building with multiple stories for 8th graders.
6th/7th Grade: Build a house with at least 2 bedrooms, 2 bathrooms, a kitchen, furniture, rugs, art work, appliances, outdoor areas. All walls need to be painted, rooms furnished, doors and windows need to be purposeful.
8th Grade: Floor Planner - Commercial - Restaurant, School, Office Building, Convention Center, Farm, Veterinarian Office, Hospital, Mall, Bank, Toy Store, Candy Store, WalMart, Grocery Store, or other commercial space.