How do browsers and the web actually work? What is HTML5-or HTML, for that matter? What do terms like "cookies" or "cloud computing" even mean? More practically, how can we keep ourselves safe from security threats like viruses when we're online?

Okay, it's kind of a given for why we need to make sure great teachers keep teaching America's children. If you've had a great teacher, you know what I mean. If you've had a bad teacher, you know what I mean. StudentsFirst argues for the end of last in, first out, which is a firing policy based on seniority. If teachers are going to be fired, the last teachers hired have to go first.

You have found the very best drawing curriculum on the Internet: ideal for individuals, homeschooling families, and art educators. You can make your Portfolio-gallery too Check out our huge (and continuously growing) library of free, downloadable, high-quality lessons authored by world-renowned artists, art educators, and authors (no registration or log-in needed).You are welcome to view, download, share, translate, and redistribute all our free lessons. 

Learn it in 5 is a comprehensive how-to instructional video library for teachers using technology in the classroom. Learn classroom strategies for Web 2.0 teaching technology with powerful how-to videos on most Web 2.0 applications. Our video library is constantly growing, with new how-to videos added monthly. Our most recent Web 2.0 how-to videos are featured on the home page. Other Web 2.0 how-to videos can be located at our easy-to-use navigation tabs, on our archives page or by using our search tool.

   Every Web site in SweetSearch has been evaluated by our research experts. School Librarians, organized by subject and academic level, Biographies for profiles of 1,000+ significant people...

The internet is a little like the proverbial elephant that never forgets. Our digital footprints are not like the footprints on the beach, washed away by the next wave or rising tide. Rather they are like footprints left to dry in the wet concrete of the footpath. Permanent. The Digital Citizen will follow six tenets of citizenship.

A website full of animated movies, interactive tutorials and instructional videos, all free for you to view and to embed in your website. Simply select an animated explanation and follow the instructions to integrate it in your site.

Curriki's mission is to provide free, high-quality curricula and education resources to teachers, students and parents around the world. Learn More

CellCraft is a new Flash game that is designed to teach about cellular biology.  

Many great educational games of all fields

Ever wanted X-ray specs or super-human vision? Chromoscope lets you explore our Galaxy (the Milky Way) and the distant Universe in a range ofwavelengths from X-rays to the longest radio waves.

"Historypin is a like a digital time machine that allows people to view and share their personal history in a totally new way.  It uses Google Maps and Street View technology and hopes to become the largest user-generated archive of the world's historical images and stories.  Historypin asks the public to dig out, upload and pin their own old photos, as well as the stories behind them, onto the Historypin map. Uniquely, Historypin lets you layer old images onto modern Street View scenes, giving a series of peaks into the past."

ideas to use online MS tools - "Students have more information at their fingertips than ever before, yet the challenge remains for them to find, evaluate, and apply the information they discover in the classroom and beyond."

5min Media is the leading syndication platform for broadband instructional, knowledge and lifestyle videos. Our library includes tens of thousands of videos across 20 categories and 140 subcategories, which are professionally produced and brand-safe.

Here's a roundup of the APIs to mine Twitter data: Trstrank: The PageRank-esque algorithm we covered previouslyWordbag: A list of "most common words" for a user with a twist. Universally-common words are essentially filtered out because InfoChimps compares a user's word choice to all of Twitter.Influence: Gets the number of replies in and out for the user, along wiht the number of tweets and the age of the account. Analysis of influence is up to you.Conversation: Provides a summary of public interactions between two users. Results are a list of tweets in which the first user replied to the second.

TextRunner searches hundreds of millions of assertions extracted from 500 million high-quality Web pages.