World Book Online for Kids is the premier general reference Web site developed especially for younger users.
World Book Student, includes the articles of the World Book Encyclopedia, a Biography Center, dictionary, atlas, an extensive multimedia collection, thousands of editor-selected Web sites, correlations to curriculum standards, and much more.
Enciclopedia Estudiantil Hallazgos is the optimal beginner’s Spanish language reference site.
Gale in Context Elementary is a comprehensive database for students in K-5. There are a lot of visual search capabilities, and articles can be saved to Google Drive, or assigned through Google Classroom.
Student Resources in Context is another comprehensive database, geared more for 6-8 grades. Articles can be saved to Google Drive, or assigned through Google Classroom.