RICHMOND, Va. (DC News Now) — The days of using hand-held calculators aren’t entirely gone, but when it comes to testing in ...

The Desmos Graphing Calculator Is Here, It's Online And It's Free. Erick Schonfeld. 9:07 AM PDT · June 24, 2011. One of my favorite demos at Disrupt NYC was from an education startup called ...

The Desmos calculator is more advanced than the TI-84 or other devices, offering a friendlier interface, live graphing updates, and free access via a smartphone, tablet or any other connected device.

A graphing calculator can be an expensive piece of equipment, with some mid-range to higher-end units costing north of $100/£80/AU$140. If you don't expect to ever need it after the end of the ...