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Charts and graphs allow us to conveniently represent data in a manner that effectively communicates its meaning. Microsoft Excel is widely used to create such graphs. But when you need an embeddable chart, you need to turn to online applications that let you create your desired graph and then generate its embeddable code.

An interesting site that provides webs of related words. To use type any word into Graph Words to see a web of alternative word choices. Click on any word in the web to generate a new web of more related words.

This is an online tool for creating interactive charts and graphs.There are four basic chart types that you can create on Infogr.am; bar, pie, line, and matrix. Each chart type can be edited to use any spreadsheet information that you want to upload to your Infogr.am account. The information in that spreadsheet will be displayed in your customized chart. When you place your cursor over your completed chart the spreadsheet information will appear in small pop-up window. The charts can then be embedded into your blog, website, or wiki.

Swivel is a web 2.0 site where you can upload and share data and graphs.

Graph supporting argument is useful for reading promotion. "Studies show that kids from low-income families who have access to books over the summer not only beat the summer slide, but make even greater gains than kids from wealthy and middle-class families."

FOSS uber datavisualisation tool

your gonna love this

the latest edition of Measuring the Information Society, which features the new ITU ICT Development Index . The Index captures the level of advancement of information and communication technologies (ICTs) in more than 150 countries worldwide and compares progress made between 2002 and 2007. Its main objective is to provide policy makers with a useful tool to benchmark and assess their information society developments and to monitor progress that has been made globally to close the digital divide.

The latest edition of Measuring the Information Society, which features the new ITU ICT Development Index captures the level of advancement of information and communication technologies (ICTs) in more than 150 countries worldwide and compares progress made between 2002 and 2007. The data and graphs make for fascinating reading making the point that the magnitude of the digital divide between countries remains almost unchanged over these last five years. At the same time the gap between the very high and very low levels have narrowed slightly.

Illuminations provides a library of 102 online activities that help to make maths come alive in the classroom or at home. Includes a Graph Creator and Isometric Drawing Tool.

Web 2.0 application for creating Charts and Diagrams online. Lots of pretty templates and design elements.

This neat tool from Google, ChartTool is a simple-to-use chart-making service that lets you simply paste in your data and play around with how it looks. It's never been easier to whip up charts that are actually easy to use and update. In fact, embedding these charts on web pages is quite simple thanks to the embed API. You can even make QR codes in just a few seconds and quickly get an embed code to add it to your website. While ChartTool does not create as many of those fancy 3-D charts that Excel does (it still makes quite a few), it likely will be able to in the future. However, if you're in a rush and need to whip up some exact charts without all the fluff, this is the tool for you.

Flubaroo is a free tool that helps you quickly grade multiple-choice or fill-in-blank assignments. I designed it for my own classroom, and want to share it with other teachers... for free! Flubaroo works with Google docs.Flubaroo also:Computes average assignment score.Computes average score per question, and flags low-scoring questions.Shows you a grade distribution graph.Gives you the option to email each student their grade, and an answer key.

Free online quiz system using Google Docs.

Moodle quiz is probably better but if a teacher is stuck, this may be the way to go.