"WatchKnow has indexed over 20,000 educational videos, placing them into a directory of over 3,000 categories. The videos are available without any registration or fees to teachers in the classroom and to students at home 24/7. Users can dive into our innovative directory or search for videos by subject and age level. Video titles, descriptions, age level information, and ratings are all edited for usefulness. Our Web site invites broad participation in a new kind of wiki system, guided by teachers. We have had a tremendously positive response from educators to the website. If we continue to work together, we can create an incredible, free, educational resource for students across the world."

"The Bugscope project provides free interactive access to a scanning electron microscope (SEM) so that students anywhere in the world can explore the microscopic world of insects. This educational outreach program from the Beckman Institute's Imaging Technology Group at the University of Illinois supports K-16 classrooms worldwide. "

Online video editing.

"The Sandbox is the Lab's way of sharing high-quality video clips with you - for free. Use our clips to make a mash-up, documentary, music video, or whatever!"

"Wiffiti publishes real time messages to screens in thousands of locations from jumbotrons to jukeboxes, bars to bowling alleys and cafes to colleges. You can interact with Wiffiti from your mobile phone or the web."

* Easily create a classroom website & blog * Manage your students' accounts * Accept homework assignments online * Keep your parents up to date

Create 3D models, maps, and diagrams in an easy-to-use, supported online environment.

"Google Earth continues to mesmerize young people with its ability to put the world's geographic information at their fingertips. Educators around the globe have created engaging classroom activities that go beyond geography to teach literature, history, math, environmental science, and more. "

"Scratch is a programming language that makes it easy to create your own interactive stories, animations, games, music, and art -- and share your creations on the web. As young people create and share Scratch projects, they learn important mathematical and computational ideas, while also learning to think creatively, reason systematically, and work collaboratively."

Video slideshow creation on the web.

"A VoiceThread is a collaborative, multimedia slide show that holds images, documents, and videos and allows people to navigate slides and leave comments in 5 ways - using voice (with a mic or telephone), text, audio file, or video (via a webcam). Share a VoiceThread with friends, students, and colleagues for them to record comments too. Users can doodle while commenting, use multiple identities, and pick which comments are shown through moderation. VoiceThreads can even be embedded to show and receive comments on other websites and exported to MP3 players or DVDs to play as archival movies."

"A free online tool to support students and teachers doing reading and research on the Internet, ages 10 and up. Strategy Tutor helps students read, research, collect and understand information better and more efficiently. For teachers, Strategy Tutor provides a way to easily create web-based lessons embedded with research-based, highly effective learning strategy and vocabulary supports."

"Science Writer is an interactive, web-based instructional learning tool designed to help students in writing a complete science report; it supports students throughout the process of writing a science report. Research has revealed several effective instructional practices in improving the written language performance of students, and Science Writer has been designed to provide these: * A breakdown of the report writing process into manageable components * Scaffolds for each step of the writing process * An organizational structure for report writing * Sentence starters to help initiate the writing"

Highlight, bookmark, and annotate the web. "Diigo is two services in one -- it is a research and collaborative research tool on the one hand, and a knowledge-sharing community and social content site on the other. "

"1. Capture anything. Chances are, if you can see it or think of it, Evernote can help you remember it. Type a text note. Clip a web page. Snap a photo. Grab a screenshot. Evernote will keep it all safe. 2. Organize it. (Or let us do it.) Everything you capture is automatically processed, indexed, and made searchable. If you like, you can add tags or organize notes into different notebooks. 3. Find anything fast. Search for notes by keywords, titles, and tags. Evernote magically makes printed and handwritten text inside your images searchable, too."

"MindMeister brings the concept of mind mapping to the web, using its facilities for real-time collaboration to allow truly global brainstorming sessions. Users can create, manage and share mind maps online and access them anytime, from anywhere. In brainstorming mode, fellow MindMeisters from around the world (or just in different rooms) can simultaneously work on the same mind map and see each other's changes as they happen."

"Online courses from the world's top scholars."

"The web offers a world of quality videos for our enjoyment and enlightenment. Captioned and subtitled videos, in particular, can be especially helpful in different ways for a large population of Internet users. A problem, however, is that such videos are generally scattered and/or mixed with all other videos across the Internet. Up until now, there was no central place to easily and reliably search for and discover such videos across multiple video hosts. 22frames was built, in part, to provide such a place. In turn, an additionally important goal is to drive significant traffic to caption/subtitle friendly video hosts and creators. By continually indexing videos from these multiple hosts, this site offers an increasingly comprehensive catalog covering many different topics. Indexing is mostly automated using APIs and specialized web crawlers. User submissions of videos and channels also play an important role. "

"Welcome to the Simple English Wikipedia, an easy-to-read online encyclopedia for people who are learning English. The Simple English Wikipedia's articles can be used to help with school homework or just for the fun of learning about new ideas. Non-English Wikipedias can also translate from the articles."

Merriam Webster's Visual Dictionary.