The TI-84 Plus CE graphing calculator is one of the most popular calculators in the world. Find out the important keystrokes you need to know to use the TI-84 Plus, and learn the math functions and constants that the TI-84 Plus CE makes available to you.Get to know the basics of graphing on your TI-84 Plus CE, as well as how to use the calculator’s zoom commands and special menus.

You can find the standard deviation of a data set in two ways with your TI-84 Graphing Calculator. First, have a look at the long lists to calculate the standard deviation from scratch on the TI-84 Graphing Calculator. Then see how to quickly find the standard deviation using one-variable stats. To help your understanding of standard deviation, this video explains what the abbreviations mean and where you can access these variables in your TI-84 Graphing Calculator.

The TI-TestGuard app permits educators to control their students' calculators in a testing environment. This video shows you how to use the TI-TestGuard app to enable and disable test mode on a class set of TI-84's.

Many end-of-course exams require that calculators be put in "exam" mode. On the TI-84 Plus C (or any of the TI-83 or TI-84 families of calculators), the best way to accomplish this is by using the TI-TestGuard app. The name of the app has changed (it used to be called Press-to-Test), and the functionality has improved.

Discover how to store a pic on the TI-84 Plus. A pic is a screenshot of the graph screen as opposed to an image -- which is a photo that can be used as a background to a graph. By storing a pic, you can graph more than 10 functions on a graph!

The Ti-84 Plus calculator can handle three decision commands (If, If . . . Then . . . End, and If . . . Then . . . Else . . . End). Here is how to use these commands in a program.The If commandThe structure of the If command appears in the first screen. If the condition following the If command is true, the program executes the command following the If statement (Command 1) and then moves on to the next command in the program (Command 2).

Your TI-89 graphing calculator (along with the TI-89 Titanium, TI-92 Plus, and Voyage 200) help you graph and so much more. You can do higher math functions, include symbols, and format equations as well as make use of the basic calculator functions — and some odd ones, too!How to find higher math functions on the TI-89 graphing calculatorOf course, your TI-89 graphing calculator helps you with higher math functions — that’s part of the reason you bought it.

The TI-Nspire device is the most sophisticated handheld graphing calculator available, allowing users to display and evaluate values symbolically, and to reuse the same equations across multiple applications. Because it’s so sophisticated, navigating its features can sometimes be confusing. It helps to know a variety of methods of achieving your aims with the device.