This is a clearinghouse to find real experiments that individuals and classrooms can participate in.  You can also create experiments for others to do.

Weebly is a San Francisco, Californiabased company that was founded in 2006with the mission to help people put theirinformation online quickly and easily. Wenow enable 3 million people to easily createpersonal sites and blogs or establishweb presences for businesses, weddings,classrooms, churches, artistic portfolios,and more.Several teachers in Warren are using weebly for a class website.

There is a useful tour describing this site. (out of the UK)

Calculation Nation® uses the power of the Web to let students challenge opponents from anywhere in the world. At the same time, students are able to challenge themselves by investigating significant mathematical content and practicing fundamental skills. The element of competition adds an extra layer of excitement

One of the most recommended sites for anatomy.

Great resource on experiments and uses for 2-liter bottles.

Archive of a great webinar from 12-10-11 dealing with Livescribe/Smartpens.  The webinar included primary, secondary, and college educators who gave many examples.  The livebinder that accompanies this is filled with resources and examples.

 tool that allows for quickly and easily designing posters, signs, fliers and more, allowing for a variety of customizations with backgrounds, clipart, and text, while also allowing users to upload and use their own pictures.  My own high school kids have used it to complete one page posters referred to as visual book reports.  Their end products were printed for display purposes in the library, and used for visuals for book-talks done by both the librarians and the students. We even use them in digital frames that loop through pictures at our circulation desk, and students have responded to the "book-reports" created in Poster My Wall by checking out those titles.   The site does not require an account though that is an option, and those opting to use the free version can create professional looking posters and download for printing in minutes.  My school secretary was so impressed with the site she has even used it to create fliers for events and activities at school.   The site is easy enough for even elementary school students.  Like Wordle, my collaborating teachers are finding some very interesting uses for Poster My Wall. Cons?  It is not a replacement to Glogster by any means, but a poster app none the less. (Rec by Cathy Jo Nelson)

Kathy Schrock has an extensive guide to the best websites.  This particular page summarizes the sites she has recommended in the past. (It started more as daily, and is more like weekly now.) Her entire site is very organized, and has something for every discipline.

Categorized by grades and subjects

Reading/Writing Workshop chat archives (uses #rwworkshop hashtag first Wednesday of the month

Tech & Learning top sites.  Includes sites for many different disciplines

Interesting list-- includes educators from many different walks, including some in specific disciplines.  Click on a name to learn how to connect with them.

Many choices to customize worksheet

Looking for inspiration for a science fair project? In need of fun, at-home science experiments? Science Buddies has over 1,000 Project Ideas in all areas of science.  There is even a topic selection wizard.

Teacher resource section of Science Buddies.  Luwanda shared this for the science fair resources.  There is much more to the site as well.

Great interactive site from the BBC.  Lola shared this for simple sentences.

This particular page is the geometry portion of the National Library of Virtual Manipulatives