HEATKEYS

The Khan Academy is a not-for-profit 501(c)(3) with the mission of providing a world-class education to anyone, anywhere. Despite being the work of one man, Salman Khan, this 1600+ video library is the most-used educational video resource as measure...

Chemistry Lessons and Physics Lessons Lessons Online: Interactive Online Audio Visual Tutorial Lessons for learning High School Chemistry and Physics. Chemistry and Physics concept explanations. Worked examples showing application of Chemistry and Ph...

Vernier Software & Technology

Finding a private tutor is easy with WyzAnt Tutoring! Select from thousands of tutors who are experts in subject areas like math, the sciences, and foreign languages. Whether you need private tutoring services, help with your homework, or a tutor to ...

The easiest way to caption and translate any video, with crowdsourcing, volunteers, and professional services.

Yahoo! Answers is a new way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights and experience.

Wonder How To is your guide to free how to videos on the Web. Search, Browse and Discover the best how to videos across the web using the largest how to video index on the web. Watch the best online video instructions, tutorials, & How-To...

Answers.com: Wiki Q&A combined with free online dictionary, thesaurus, and encyclopedias. Ask questions, get answers.

Prezi is the zooming presentation editor

Use engaging videos on TED-Ed to create customized lessons. You can use, tweak, or completely redo any lesson featured on TED-Ed, or create lessons from scratch based on any video from YouTube.