When I first thought of problem-based learning(PrBL) students need to solve a real-world problem. I thought about the innovation challenges where students are designing items to solve a need for a community or person. I thought about design thinking workshops where students engineered a plan to fix the cafeteria seating. I think about the Anatomy and Physiology class where students are solving case studies (Punahou, 2011). I thought about my own class Design of Emerging Technology (DET) where some students design a project to solve an issue they see (mail sensor, sensors for low stock items, light that changes based on heart rate). These are all real-world problems and fall under the umbrella of Project-based learning in my mind. In fact, some of my students in DET would create art installations and be more project-based. Then I read Krall’s (2012b) statement “we need to define what is an “authentic mathematical experience”. A mathematical experience to me is something that promotes ma...