General

Education blogs – here is a collection of Educational blogs

Kathy Schrock’s Guide – this is a great site packed with resources and ideas for many subject areas

– Online lesson and resource sharing site

Educational Origami – This wiki site has great resources for integrating 21st Century learning into your class.

Curriki – A curriculum sharing wiki, lots of lesson and unit plans with links to additional resources.

Here are some links that I have come across by subject area:

Art

Artcyclopedia – Just as the name suggests, this is an online art encyclopedia.

Music

Keyboard Museum – This site has many virtual drum machines that you can try out.

Math

The Mathematics Genealogy ProjectMathematics Geneology Project – A project out of North Dakota State University that is trying to compile a database of all the mathematicians in the world. For each mathematician, you can view their dissertations and the links between advisors and students.

VMath Live – Online activities and games for mathletes.

World Math Day – Official site for World Math Day with lots of links and resources.

The Futures Channel – A great site offering free educational movies for Math and Science teachers.

Social Studies

CyberSchoolBus – This UN site has great resources based on official statistics. Also the infonation section allows students to generate graphs by country and statistic.

Factchecked – This site is an offshoot of Factcheck.org with lesson plans and resources about reasoning and critical thinking that are related to current events.

Gapminder – This site offers an amazing tool for displaying country health indicators. Click here to activate the Graphing Tool.

Science

Encyclopedia of Life – An online encyclopedia about Biology that is generated by contributions from scientists and amateurs.

The Futures Channel – A great site offering free educational movies for Math and Science teachers.

SETI Institute – The Search for Extraterrestrial Intelligence (SETI) is a nonprofit organization engaged in scientific research and education. They have some great links for educators and you can even participate in the collaborative effort to analyze the data they collect with SETI@home.

STORY OF STUFF – A video about sustainability with great teacher resources. You can download the video from the site to show in your class.

Worldwide Telescope – This program allows you to view NASA images of space and is available free from the website.

Language Arts

Grammar Girl – This site is a great resource for Grammar tips, also Grammar Girl has a very popular pod cast that you can download through iTunes.

Citation Machine – “Citation Machine is an interactive web tool designed to assist high school, college, and university students, their teachers, and independent researchers in their effort to respect other people’s intellectual properties.“

Gutenberg Project – “Project Gutenberg is the first and largest single collection of free electronic books, or eBooks.”