AltaVista Home - Other than Yahoo, probably the most used search engine. Recently they have added an option to look for images, audio , or video. This feature can be a very helpful tool. Ask Jeeves for Kids - A search tool where kids type in an actual question and get several responses or sites where to find the answer. Ask an Expert - Students can find experts in a variety of areas to email directly.
Some experts have their own sites but usually include an email address.
Ditto - Another great image search engine.