In this TEDTalks video, Dan Meyer talks about how today’s math curriculum is teaching students to expect and master paint-by-numbers classwork, robbing kids of a skill more
important than solving problems: formulating them. He then talks about classroom-tested math exercises that prompt students to
stop and think.
It’s a good watch for any educator in mathematics.

http://www.youtube.com/watch?v=NWUFjb8w9Ps