The clever folks at Desmos, the free online maths graphing website have just released the first Desmos iPad app! The app allows students, teachers, and math enthusiasts to explore maths through Desmos without the need for an internet connection – or an expensive hand-held graphing calculator. And even better, it’s free!

The app features many of the familiar elements of, but with dozens of built-in examples, an enhanced design, and offline support. Using its powerful maths engine, the calculator can instantly plot any equation, from lines and parabolas up through derivatives and Fourier series. Sliders make it a breeze to demonstrate function transformations.

Features of the app include:

Graphing: Plot polar, cartesian, or parametric graphs. There’s no limit to how many expressions you can graph at one time – and you don’t even need to enter expressions in y= form!

Sliders: Adjust values interactively to build intuition.

Zooming: Scale the axes independently or at the same time with the pinch of two fingers, or edit the window size manually to get the perfect window.

Points of Interest: Touch a curve to show maximums, minimums, and points of intersection. Tap the gray points of interest to see their coordinates. Hold and drag along a curve to see the coordinates change under your finger.

Scientific Calculator: Just type in any equation you want to solve and Desmos will show you the answer. It can handle square roots, logs, absolute value, and more.

Desmos iPad

This app will definitely be of interest to Maths teachers at secondary and post-16 level. Physics teachers too.

You can get the free Desmos iPad app from the app store here.