This collection of animations introduces students to planetary motions, gravitational effects, and the scale of astronomical distances. Students can view visualizations of Earth's changing seasons, circumpolar motion,...

This is an archive of questions and answers about Mars. It is divided into Beginner, Intermediate, and Advanced categories and covers such topics as the possibility of life on Mars, Martian atmosphere and geography, and...

Quia is short for Quintessential Instructional Archive. This site offers a collection of astronomy-based computer activities and quizzes developed by educators for students. Games include concentration (memory), word...

This is a diagnostic test developed by the Collaboration for Astronomy Education Research (CAER) for astronomy teachers teaching non-science majors at the introductory level. The first twenty one questions are content...

This site, created by Dr. Gene Smith of the University of California, San Diego, is very useful for a teacher. There are many tutorials, educational sites, curriculum resources and links to other courses. Topics on this...