Enabling Test Mode on the TI-84 Plus CE

Enable Test Mode

Entering Test Mode (or “Press-to-Test Mode”) on a TI-84 Plus CE is a way of ensuring that students are not able to access any unauthorized programs or files when taking an exam. While it is not immediately obvious how to enter this hidden mode, it will be easy for you to do once you learn … Read more

TI-84 Plus CE: Turning On and Off

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Turning your TI-84 Plus CE graphing calculator on and off can be accomplished quickly once you learn how to do it. Here is a quick guide to help you out: Turning Your Calculator On To turn your calculator on, all you need to do is press the “On” button in the lower left corner. If … Read more

How to Calculate Factorials on the TI-84 Plus CE

Factorial Option in the Math Menu

Using the factorial function on the TI-84 Plus CE graphing calculator can be useful when calculating permutations or other such statistical calculations. Students usually learn about factorials in introductory algebra courses for their use in probability, but will often forget what they are, as they aren’t used a whole lot until later courses. Here is … Read more

How to Factor Polynomials on a TI-84 Plus CE

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Polynomials can be solved by using several different methods, such as the quadratic formula or a method known as factoring. Factoring allows you to rewrite polynomials in a form that makes it easier to find the solutions/roots of your equation. But what many fail to realize is that this process can be automated using your calculator. … Read more

TI-84 Plus CE: Working with Fractions

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The TI-84 Plus CE graphing calculator offers the ability to use fractions in calculations, but these options are hidden away in the calculator’s menus. Once you learn how to use these functions, you will be able to calculate using fractions, convert between fractions and decimals, and convert between improper and mixed numbers. Ready to learn … Read more

How to Graph Functions on the TI-84 Plus

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You would think that it would be easy to graph an equation/function on a graphing calculator. However, despite it being easy to learn, it is not immediately obvious how to find and use this functionality. This guide will show you everything you need to know about graphing equations, and applies to every model of the TI-84. This includes the TI-84 … Read more