This site guides students through a series of modules that teach them how to distinguish different kinds of information on the Internet, search for and select research topics, search databases and other collections, locate and cite sources, and evaluate the sources they find.
A merger of the Internet Public Library and the Librarians' Internet Index, this site is a comprehensive source of "information you can trust."
Since 1995, Refdesk.com has served as a one-click springboard to many of the web's top dictionaries, encyclopedias, calculators, atlases, news headlines, and search engines.
For younger students who are not quite ready to navigate Refdesk, Fact Monster from Information Please is the tool to use.
English and History
Sprechen Sie Deutsch? Perfect for language studies, this handy web site automatically converts text from one language into another, such as English to Simplified Chinese or French to English.
This site enables you to download more than 30,000 free electronic books to read on your computer, iPhone, Kindle, Sony Reader, or other portable device in a variety of file formats.
This site includes collections of primary sources in ancient, medieval, and modern history, as well as history of science, women's history, African history, and others.
The web's answer to those black- and yellow-striped Cliff Notes is Novelguide.com.
Math and science
This site provides help in a number of mathematics-related subjects, including basic grade-school math, calculus, algebra, geometry, trigonometry, and statistics.
At Science Made Simple, elementary and middle school students can get detailed answers to many science questions, read current news articles related to science, get ideas on school projects, and take advantage of unit conversion tables.
Ever wanted to know why earthquakes happen? How CD burners work? What the sun is made of? These questions, and many others related to computers/electronics, automobiles, science, entertainment, and people, are all answered at this award-winning web site.