"Physical Sciences Resource Center" A collection of information and resources for physical sciences education. Hundreds of annotated lessons, simulations and resources for teaching topics in the physical sciences including astronomy, mechanics, electricity, physics an more! (NSF) (K - College) http://psrc.aapt.org

The U.S. Department of Energy (DOE) National Science Bowl® is a nationwide academic competition that tests students' knowledge in all areas of science. (Middle - High School) http://www.scied.science.doe.gov/nsb/index.html

The Mars Curriculum Modules are designed to help bring the topic of Mars into your 4th through 12th grade classrooms. (4th - high school) http://marsprogram.jpl.nasa.gov/classroom/resources.html

"Energy Activities for Teachers and Students" offers activities for career awareness, and learning about energy specifically for the secondary student. (K - High School) http://www.eia.doe.gov/kids/classactivities/teachers&students.html)

"Earth Science Week" activities based on the National Science Education Standards and the Earth Science Week. (MA) (K - High School) http://www.earthsciweek.org/forteachers/classroomactivities.html