The subject of a recent post, Desmos is a free portal for building and sharing rich, interactive content. The objective of Desmos is to serve as a web-based, unifying standard for interactive lessons built around their browser-based collaborative environment for remote tutoring called a "virtual Whiteboard".
The Desmos Calculator has just been introduced. This browser-based calculator is powerful, intuitive, and free. This calculator can be used for graphing, calculating, sharing, and creating.
Watch an introduction to the Desmos Calculator
Go to an earlier post about Desmos
DISCLOSURE OF MATERIAL CONNECTION: http://cmp.ly/0