Desmos - Graphic Calculator

Desmos is a free graphing site with a lot to offer math and science teachers. They don't only have a great free Graphing Calculator Links to an external site., but offer other graphing functions. 

They have a free Math Tutorial Links to an external site.section just for math teachers. 

Graph functions, plot tables of data, evaluate equations, explore transformations, and much more – for free!

This a free, embeddable media, but does require a subscription to access. 

free subscription subscription required

Example

Graphing Calculator Links to an external site.