Cornell University
Cornell University: Astronomy: The Phases of the Moon
This site from Cornell University provides great information on the different phases of the moon. As the Moon moves in its orbit around the Sun, our view of the side illuminated by the Sun changes. Furthermore, the rising and setting...
Harvard University
Harvard University: Eyes on the Sky, Feet on the Ground: The Earth's Moon
In this online textbook, students explore the phases of the moon, the moon's orbit, the origin of the moon, and the tides. Includes numerous inquiry-based activities.