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Maths Practice App

Desmos Graphing Calculator

Android - Free iPhone/iPad - Free

Teacher Overview

Desmos is the next generation of the graphing calculator. The Desmos Graphing Calculator automatically solves and graphs equations for users. The calculator can plot a variety of different equations, from lines to parabolas and more. It can take a set of data and create a graph. It supports functions and inequalities; it can graph exponents and logs, trig functions, precalculus and calculus problems, and even statistics and probability. The uses of Desmos are unlimited in the math class.

Teacher Review

With Desmos, students don't have to download anything, and they find that the online calculator is easier to use than the handheld or software, once they get past the initial learning curve.
Desmos can be used primarily by teachers for creating graphs to show students solutions to problems. Teachers can also give students this link so that they can check homework on their own. 
Desmos can used in teaching by giving the students certain practice problems containing linear equations to graph. The students can be asked to examine the graph and answer certain questions based on the graph. Students can able to see that a line can be the same even if the equation you are given looks different because it could be in a different form. This can be a great opener for the students to learn to translate lines from point-slope form to slope-intercept form, and finally to standard form. 
One of the easiest aspects of Desmos to use in the classroom is the slider feature. You will also be able to graph different relations and functions without having to navigate menus, and just using the keyboard. Finding zeros and intersections are really easy, though you wish Desmos would display more decimal places. Creating graphs to use on homework assignments and assessments is a lot easier to do with Desmos than with other software, as well—the images come out cleaner, and are relatively easy to crop or edit.

Teacher Certification


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Developer Description

Explore math with Desmos! Plot functions, create tables, add sliders, animate your graphs, and more -- all for free.

At Desmos, we imagine a world of universal math literacy and envision a world where math is accessible and enjoyable for all students. We believe the key is learning by doing.

To achieve this vision, we’ve started by building the next generation of the graphing calculator. Using our powerful and blazingly-fast math 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. It's intuitive, beautiful math. And best of all: it's completely free.


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, or animate any parameter to visualize its effect on the graph. Try typing y=mx+b and adding sliders to get started.

Tables: Input and plot data, or create an input-output table for any function.

Statistics: Find best-fit lines, parabolas, and more.

Calculus: Graph derivatives (d/dx) and explore key concepts by building secant and tangent line sliders. Graph Maclaurin Series (okay, all kinds of Taylor Series, but that guy gets no love...) Evaluate a definite integral (int) in an instant, or plot an integral with varying bounds.

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.

Inequalities: Plot cartesian and polar inequalities.

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