World Book Kids is the traditional encyclopedia turned digital.
Kids InfoBits is an easy-to-use digital resource featuring age-appropriate, reliable, curriculum-related content covering a broad range of educational topics. The modern design and simple navigation make it easy for users to explore content and gain comfort with database searching.
Khan Academy: The site famously features K-12 video tutorials created by Sal Khan and team. It currently gives students access to thousands of video tutorials that explain the ins-and-outs of algebra, geometry, trigonometry, calculus, statistics, finance, physics, economics and more. Fees may apply.
Schoolhouse Rock: Animated musical educational short films that aired during the Saturday morning children's programming on the U.S. television network ABC. The topics covered included grammar, science, economics, history, mathematics, and civics
WatchKnowLearn: This site has indexed over 33,000 educational videos from YouTube and placed them into a directory of over 3,000 categories. The videos are available without registration or fees to teachers in the classroom and to students at home 24/7.
Google Art Project: A new tool that gives you access to more than 1,000 works of art appearing in 17 great museums across the world. Using Google’s Street View technology, you can now tour collections at 184 museums worldwide, including the MoMA and Met in New York City, the Uffizi Gallery in Florence, the Hermitage in St. Petersburg, the Van Gogh Museum, and the Rijksmuseum in Amsterdam.
National Geographic: Provides facts, photos, videos, and more about countries around the world -- something NatGeo knows a lot about.
TED-Ed: The maker of TED Talks now provides carefully curated educational videos or "lessons worth sharing." Topics range from Literature and Language, to Mathematics, to Science and Technology.
A Biography of America: This video series for high school and college students presents American history as a living narrative rather than a collection of facts and dates. Produced by WGBH Boston in cooperation with the Library of Congress and the National Archives and Records Administration.
A Crash Course in World History: Best-selling author John Green gives you a playful and highly visual crash course in world history, taking you from the beginning of human civilization 15,000 years ago through to our modern age. The videos are animated and fun.
Shmoop Learning Guides: Shmoop's learning guides break down some of the texts most frequently taught in high school classrooms. Everything from Mark Twain to Ayn Rand to Shakespeare.
AAA Math: Features a comprehensive set of interactive arithmetic lessons. Unlimited practice is available on each topic which allows thorough mastery of the concepts. You can sort by grade level. K-8.
100,000 Stars: An interactive visualization of—you guessed it—more than 100,000 stars. 100,000 Stars was created by Google using data from NASA and the European Space Agency. Before you experience the map, you will need to download the Chrome browser.
HooplaKidz: This YouTube channel is dedicated to animated nursery rhymes and stories designed to entertain and educate children between the ages of 2 and 8.
SAT Practice: The College Board (the makers of the SAT exam) also hosts free practice exercises on its web site.
ACT Test Find everything you need to know about registering for the ACT test, important dates, test prep, what to expect on test day, your scores, and much more!