Searchasaurus
This search is comprised of Encyclopedia of Animals, General Encyclopedia, Middle Search Plus and Primary Search geared towards greade levels K-6.

Kids InfoBits (Gale Group)
Kids InfoBits is a database developed especially for beginning researchers in Kindergarten through Grade 5. Featuring a developmentally appropriate, visually graphic interface, the most popular search method is moving from a broad subject to a narrower topic using the subject-based topic tree. The curriculum-related, age appropriate, full-text content is from the best elementary reference sources and magazines. This database covers geography, current events, the arts, science, health, people, government, history, sports and more.

Kids Search
Designed especially for youth in grades K-8.

Student Research Center (EBSCOhost)
Includes primary source documents as well as magazines, newspapers, biographies, radio and television transcripts, encyclopedias, images and country reports, for grades 1 through 12.