The big ideas approach was possibly both the best and the worst part of the redesign. I love the big ideas! They forced me to check my own understanding of physics and therefore they enriched my ability to pass on that to my students. Now to be able to use the big ideas to help the students build a secure framework for their science understanding I feel will be an exciting journey for many years. The down side was the way the Course Documents build the 7 big ideas spread across both the 2 APP1 and 2 courses. To get from the documents to something coherent and manageable I could teach in the classroom was a lot more work than it needed to be.