Test/Improve - Did my design work?  Make your design even better!

During this stage, students test their designs.  Physical prototypes should be used or experienced by a variety of peers, while written work, oral presentations, or videos can be watched or read and then critiqued by classmates.  Students listen to and record all feedback to improve the design, and learn from their mistakes to make the design even better. They then test their designs again, and can re-design as needed.