The following is a list of informational astronomy links for your convenience. Additional activity links specifically for elementary-middle school students can be found @ Fun On-line and for teacher planning @ Just for Teachers . Please visit those sites for additional educational links. 

Simulations
Links are provided at this site that simulate several common astronomical phenomenon.

Student Astronomy Research Information
These sites have astronomy information for student research. The links are divided by reading level. The first set of links are appropriate for all ages because each site contains material which is divided by reading level or there is no reading required.

Miscellaneous Astronomy Information
These links contain miscellaneous information on astronomy and other space-related topics.