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Do the Math: Savings on graphing calculators


If you have to purchase an exam-approved graphing calculator for your student, you're probably going to experience sticker shock. They can run as much as $150.

Here's a few ways to save and look like a math genius:

New: Walmart has a an advanced function, exam approved Casio Graphing Calculator for $48.93. Make sure the calculator has USB port (this one does), which is important. Some cheaper models on the market don't have one. You're not going to do better than this price for a new device. Shipping is 97 cents.

Apps: Download the top-rated Graphing Calculator by Gabor Nagy App for iPod, iPad and iPhone from iTunes for $1.99. It was just updated at the end of July. Your student may not be able to use this during an exam or in class (check with your child's teacher on the school's policy), but its more convenient to tote around than the big, clunky device.

Used: Math teachers suggest you check out listings on and There are loads of them being offered at a big discounts. You can pick up the top-rated Texas Instruments TI-83 or TI-84 for as little as $45.

Before you buy, check with your child's math teacher or school to find out about rules and requirements and what features are needed.

Three ways to keep up with the latest deals: "Like" our Sentinel Deals page on Facebook; follow Doreen Christensen on Twitter@PrettyGoodIdeas and get mobil alerts:

Categories: Back to School (18)

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About the authors
Doreen Christensen has never paid full price for anything. If there is a way to save on something, she will find it and share how you can save, too. Doreen is a senior reporter covering consumer news, health, beauty and features for the online and print editions of the Sun Sentinel. A 32-year veteran of the newspaper, she previously was a senior copy editor on the universal copy desk. Doreen spends her time off hunting bargains, clipping coupons, gardening and traveling.

Justine Griffin covers retail and marine business for the Sun Sentinel. She is a Tampa Bay native who graduated from the University of Central Florida in 2010. After spending a year covering crime in St. Augustine, Fla., she moved to Fort Lauderdale and made the switch to business journalism. When she’s not writing, she’s riding horses and spending time with her whippet puppy, Josie.

Marcia Heroux Pounds is the Sun Sentinel's workplace columnist when she's not shopping for shoes. She also writes about small business, which allows her to visit many of South Florida's unique shops and boutiques.

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