Here are a few helpful sites that can be informative:
This is a link to Ted Talks, there are some very inspirational talks about education in the 21st century. Search Salman Khan, Jane McGonigal just to get started.
The following are links to research articles aboout Centers-Based learning.
Action Research; Teachers as Researchers in the Classroom
Craig A. Mertler
Brain Rules; 12 Principles for Surviving and Thriving at Work, Home and School
Reality is Broken; Why Games Make Us Better and How They Can Change the World