Join our next free web seminar in our NSDL/NSTA Series: Timely Teachings: Seasons and the Cycles of Night & Day, Thursday, December 10, 2009 starting 6:30pm Eastern. We’ll review scientific principles, examine common misconceptions and formative assessment strategies, and discuss how to approach these topics by integrating science and literacy. We’ll also share resources from Beyond Penguins and Polar Bears, the NSDL Middle School Portal, and other high-quality content providers. Register today!