Wow, I just learned about this tool from our CFF Coach - Wolfram/Alpha! This type of tool has the power to show educators just what Web 2.0 is all about.
It should also challenge them to think about what they are teaching their students. Here is a link to the screen cast that explains the website possibilities.
A computational knowledge engine....Think about the "what if" questions it can answer for students. I challenge you to discuss with one other person the potential that this type of tool has to change teaching and learning in the 21st century.