Combine an excess of scrap cardboard and 6th grade art students. Ask for them each to build a house that has a roof, four walls, a door and at least one window. Shake well and add end-of-the school year energy, paint and about thirty glue sticks. You get a small cardboard city and a lot of fun.
Lots of good discussions about hinges, doors, roof lines, balconies and interiors. The best part is the creativity my students showed in bringing their house to life. Good choices and problem solving were encouraged.