Other
National Geographic: Jason Learning
[Free Registration/Login Required] Educators and students will enjoy visiting the JASON Project, a NASA and National Geographic cooperation which works to provide accurate and intriguing scientific knowledge for students.
NASA
Nasa: Finding the Distances Between Planets
NASA site features a lesson plan that teachers can use to help their students see how far they are from each of the planets.
University of Washington
Neuroscience for Kids: Biological Rhythms
Site contains experiments students can do in the classroom to enhance their understanding of biological rhythms.
Other
Kiddy House: All About Chickens for Kids and Teachers
This comprehensive resource features everything you want to know about chickens. Students and teachers will "cluck" when they explore this site.