4 Excellent Graphing Calculators for Math Teachers and Students

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Looking for some very good graphing calculators to use with students in class? The suggested tools below are definitely a must have. These are some of the most recommended apps by math teachers. The apps are web-based and work across different platforms. Check them out and share with us what you think of them.

1- Scientific Calculator

Scientific Calulator is a powerful, programmable, scientific calculator.Some of its features include: Supports variables, constants, and custom functions; Save scripts online so you can access them anywhere or in a local library; Complex numbers, arbitrary precision integers, and exact fractions; Algebraic pretty-printed display; Full functional programming language; Supports matrix and vector operations; Calculation history lets you refer to previous results.

2- GeoGebra

GeoGebra (www.geogebra.org) is free dynamic mathematics software for all levels of education that brings together geometry, algebra, spreadsheets, graphing, statistics and calculus in one easy-to-use package. Interactive learning, teaching and evaluation resources created with GeoGebra can be shared and used by everyone at tube.geogebra.org.
3- Desmos Graphing Calculator

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

4- Graph.tk (Update: no longer working)

Graph.tk is an online and open-source graphing utility.It's very easy to use. Use the "+" button to create a new equation. Use "/" for fractions, "^" for exponentials, and "*" for multiplication.