Authentic Inquiry Maths: Show me 31/100

I like that Bruce Ferrington gives students some freedom to develop their own models. Not only is this good for students, but it reminds us teachers that the way we model mathematics might not be a natural starting point for students. We need to approach our curriculum recognizing that students need help moving from less formal, less organized ways of using to models towards more organized models and eventually formal mathematics. (In RME-speak, "progressive formalization.")