American Museum of Natural History
A Closer Look at Mars
A website looks at how we know so much about Mars—telescopes, robots, and spacecraft—and the search for martian life. Following the informational text are three questions that quiz pupils about possible life on Mars. 
NASA
Nasa Star Child: A Song for All Seasons
After listening to excerpts from four of the violin concertos from "The Four Seasons" by Italian composer and violinist, Antonio Vivaldi, decide which excerpt was meant to go with which season, and also decide where the earth would be in...
NASA
National Aeronautics and Space Administration: Scijinks: Seasons
An explanation about the rotation of the Earth and why the Earth has seasons.
Ohio State University
Beyond Penguins and Polar Bears: Common Misconceptions About Day and Night
Misconceptions about the causes of seasons and day and night are common through all ages. Use the information on this site to help your students understand these concepts. Included are links to many resources and lesson plans for...
Science Buddies
Science Buddies: Project Ideas: The Reasons for the Seasons
In this astronomy science fair project, investigate how the earth's axial tilt creates seasons. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction, followed by a section on...
NOAA
Noaa: Paleoclimatology Program: Astronomical Theory of Climate Change
Use this site to learn how the Earth's not-so-circular orbit around the sun has affected our climate over thousands of years, and continues to affect our climate now.
National Museums Liverpool
Liverpool Museums: The Sun Tracker
This simulation allows the user to see the sun's arc in the sky anywhere in the world at any time. By changing the season settings the user can see how seasons affect the height of the sun's arc.
Ducksters
Ducksters: Kids Science: Earth's Seasons
Kids learn about the science of the seasons - winter, spring, summer, and autumn. Why we have them due to the Earth's tilt.