FREE! The National Center for Case Study Teaching in Science sounds like a mouthful--but really it's an incredible resource of more than 430 peer-reviewed cases for teaching science. Cases come with teaching notes, questions and an "Answer Key." We liked the description of how to apply Newton's Third Law in a Graviton Ride, written by three college profs from New York. You'll never let centrifugal force push you around willy nilly again. Hat tip to EdSurge friend and teacher, Miss Jessica Sullivan.
