"Finally: a scientific graphing tool for students and teachers. Import data from experiments or enter it manually into an online spreadsheet. Make scatter plots, bar charts, lines-of-best fit and much more."
Web app lets students use web-connected mobile devices to indicate whether or not they understand a topic, then provides teachers a real-time graph of student responses.
See how often US presidents have said certain words in their inaugural addresses.
Click on the examples on the right, or type in your own word above.
Hover over points in the graph and milestones to see names and dates
Advocates also say that the availability of technology that can call up the knowledge of the world's best thinkers with the click of a mouse, that can graph in two seconds what once took hours, and that can put scientific instrumentation in a pocket-sized computer further argues for moving away from century-old models of instruction.