Dipity is a free, online timeliner. For each event created, students can added a description, a picture, an online video, and a map where the event took place. The timeline can be shared and worked on by a group collaboratively. The timeline can also be added to a blog.
Create free online charts with online chart builder ChartGizmo.com - Charts can be added to a website, blog, or wiki
Google Sky works very similar to Google Maps. This would be a great tool with an astronomy class.
Powerful tool for creating web surveys. Online survey software made easy!
Wink is a Tutorial and Presentation creation software, primarily aimed at creating tutorials on how to use software (like a tutor for MS-Word/Excel etc). Using Wink you can capture screenshots, add explanations boxes, buttons, titles etc and generate a highly effective tutorial for your users.
MyownDB is an free, online database application. Information can be entered, modified, deleted, and most importantly searched.
This is a great graphic calculator where students can enter equations and then see the cooresponding graph.
'Create a Graph' is a great site that helps students create bar, line, area, pie, and point graphs easily. It allows you to customize colors, fonts, and much more.
Great tool for teachers to share with parents of elementary students.
Sumo Paint is an online photo and image editor. This program would allow students to design images without having to download software or worry about compatibility.
Bubbl.us is an online, idea-web creater. It is simple to use, and can be shared and edited with others.
This website is full of great java applets that explain physics concpets. This would be a great site to use with the interactive whiteboards.