The Problem Solving and Design Process is an important skill for anybody to know. This unit takes between one to two weeks to complete. Student learn critical thinking skills, brainstorming, and practice communication skills while learning to design and build in this fun and flexible unit. This is great for the elementary to middle school level, but could also be adapted for high school. I have taught this in my 7th grade technology class and 8th grade pre-engineering class. Both are STEM courses. The materials listed in this unit can be switched with whatever materials you choose or have readily available.