How an award-winning teacher uses an app and camera phone to reinforce good math skills

http://www.chalkbeat.org/posts/co/2016/09/08/how-an-award-winning-teacher-uses-an-app-and-camera-phone-to-reinforce-good-math-skills/
This Chalkbeat story is about Carrie Jordan, Colorado's newest elementary PAEMST awardee.