As states start phasing in Common Core standards in public school classrooms, no Common Core textbooks have been written yet, and new assessments are still being developed. So, teachers are creating ...

Normally, Sherry Geesaman wouldn’t be nervous. Normally, she’d flip open a plan book or a textbook and start riffing. That is, after all, what veteran educators do. And Geesaman’s been teaching for 20 ...