The Common Core State Standards are causing math teachers to get more innovative in how they convey the material. Teachers in Osawatomie Unified School District 367 in Kansas are working to develop a curriculum that is more interactive and more difficult in advance of common core-aligned testing in 2015. "What I like about Common Core is it's focused just as much on how we teach as what we teach. It's really asking teachers to think 'How am I teaching? Am I using the best kind of instruction I can and thinking outside the box?' " said Susan Gorman, the district's director of improvement.