Max Ray-Riek works at The Math Forum at NCTM and is the author of the book Powerful Problem Solving. He is a former secondary mathematics teacher who has presented at regional and national conferences on fostering problem solving and communication and valuing student thinking.  He says, ““There’s so much being figured out right now about how math can be taught as a dynamic, engaging subject where everyone has unique ideas that matter… One of the most exciting problems facing the world today is how to teach math in a way that builds on students sharing their ideas.”  You can read a full interview with Max Ray-Riek at http://smts.ca/spotlight-profession-max-ray-riek/ .