What began as an extra credit assignment for my math students when they were not quite grasping the significance of parallel lines, eventually became an art exhibit and a national award.
I asked my students to photograph parallel lines in the world around them and the submissions I received were tremendous. Not only were they beautiful, they demonstrated mastery of the very mathematical concept I was trying to teach.
In 2011, I was awarded the Challenge to Innovate Mobile Project by the NEA and the US Department of Education.
This project later turned into a series of photography scavenger hunts for a number of mathematical concepts found in our every day worlds: shapes, symmetry, transformations, etc.