Project Based Learning: Solve a Mystery with Scientific InquiryThis is a science inquiry project where students use the concepts of the scientific method to solve a theft. I created this as a project based learning unit for my third grade students. I would suggest using it with third or fourth grade students. It is a great extension to a scientific inquiry unit! If you work on the mystery every day, and spend about 45-60 minutes each day, the unit will take you approximately 2 weeks. INCLUDED:1.