Section 4 Calculators
It might be useful to have a graphing calculator, and the standard recommendation is the Texas Instruments TI-84 Plus.
However, many choices of free "calculating device" can work too, including websites, phone apps and computer software, and I will demonstrate some of them. Two of my favorites are the online tools Desmos Graphing Calculator 1 and the Graphing and 3D calculators at Geogebra 2 .
In addition to that website interface, Desmos is available as a free app for iPhones, iPads 3 , and Android 4 devices. There are also several other tools at the Desmos website 5 , such as a Scientific Calculator 6 .
Such tools may be used for some homework and in-class exercises, but not on tests or the final exam.
www.desmos.com/calculator/www.geogebra.org/calculatorapps.apple.com/us/app/desmos-graphing-calculator/id653517540play.google.com/store/apps/details?id=com.desmos.calculatorwww.desmos.comwww.desmos.com/scientific