See also Online Resources for Grade K — 6 and Online Resources for Grade 7 — 12. For online practice tests and tutorial courses for students, see LearningExpress Library database (choose School Center).
DK Find Out!
This highly visual site offers articles, quizzes and videos to help kids learn and explore the world.
The goal of the Khan Academy is to offer "a free world-class education for anyone anywhere." Content includes math; science topics such as biology, chemistry and physics; arts and humanities; economics and finance; and test preparation.
Create a free account to read articles about current events and opinions (in the News section) and other topics such as Science & Math and Arts & Culture (in the Library section). Each article is available in five reading levels from elementary to MAX (the original version), and articles come from Newsela’s content partners such as The Washington Post, Scientific American and Smithsonian.com. You may practice writing responses and answer quiz questions about what you’ve read. Some articles are also available in Spanish.
Students can discover big ideas by watching short, animated videos exploring subjects including math, arts, science and social studies. TED-Ed encourages students to create their own TED-style talks using its curriculum as a guide. This project is part of TED: Ideas Worth Spreading which has thousands of free, short video talks related to technology, entertainment, design, science, business and global issues.