Encyclopedia Smithsonian allows you to search their collections alphabetically. How Stuff Works is a very rich and complete site. Ask it a question, and receive a complete, illustrated, and frequently animated response. This link is to the site index. Dictionary Foreign Language Dictionaries Little Explorer's Dictionary A clickable picture dictionary for younger children.
Definitions contain links to many carefully chosen related student-safe sites.
Includes classroom activities utilizing this dictionary. Available in French, German, Portuguese, and Spanish. Excellent graphics which make terminology easier to understand. Here you can access basemap data to create maps of geographic features such as administrative boundaries, city points, rivers, roads, railroads, and airports. You can create maps of the United States , Europe , or the World .