A community of users who discuss the site and offer suggestions and even tips on how to use it. Don't forget to get the addon for Google. See both results on one page: https://addons.mozilla.org/en-US/firefox/addon/12006
Wolfram/Alpha is to be the first web-based tool that can find answers to all systematic knowledge in the world. For educators, this "computational iknowledge engine" can find objective and fact-based answers for a variety of subject areas. Type in "Newton's Law," for example, and the formula for force is explained. Enter in an equation for a line, and the site plots the line on a graph. Ask "What is the GDP of the United States and Canada?" and a chart depicts a side-byside comparison of the nations' economic data.
"Wolfram|Alpha is a free online computational knowledge engine that generates answers to questions in real time by doing computations on its own vast internal knowledge base. Our long-term goal is to make all systematic knowledge immediately computable and accessible to everyone. This can be valuable to educators in many ways. "
"Wolfram Alpha is on a mission to develop an "app for every course." The company launched its first three subject-specific iPhone apps on Tuesday, and all three - Algebra, Calculus, and Music Theory - look to be promising educational tools."