Compare Graphing Calculators

The cost of graphing calculators, which feature many customizable options and built-in algorithms to make difficult math easier and are required for many advanced math courses in high school and college, can vary widely. The cheapest graphing calculator offered at Staples.com, a major home office and school supply retailer, is $54.99, and the most expensive model costs $219.99. With such variation, it's important to compare models to make sure you are getting a graphing calculator that does what you need it to do, but also that you aren't paying for programs that you'll never use.

Instructions:
1. Look at onboard memory. A range of options are available; HP, a major graphing calculator manufacturer, offers a model with a mere 32KB of memory as well as a calculator with 1.3MB of memory. More memory allows for increased storage for onboard notes, extra applications and graphing calculator games. If you don't plan on adding many special programs or taking virtual notes, get a low-memory model to save money.

2. Consider connectivity options. Especially relevant to those who plan on uploading custom programs, it is important to compare USB, 10-pin and 4-pin connectivity. Make sure that the calculator you select is able to hook up to your computer.

3. Look for the right built-in functions and equations. The packaging will usually tell you what types of math courses the calculator is best suited for. Most graphing calculators come with the basics required for algebra and statistics; however, a geometry, trigonometry, or calculus course may require a higher-end graphing calculator.

4. Factor in the cost of accessories. Don't just pay attention to the calculator's sticker price when comparison shopping. Remember that you may need extra cables for computer connectivity, batteries for power and a carrying case for portability. Going with a slightly higher priced item that comes bundled with these accessories may actually save you money when you consider the cost of buying each accessory separately.

5. If you want to use the graphing calculator on a standardized test such as the SAT or ACT, make sure it is approved for that purpose. This information should be given on the calculator's packaging, or you can check the manufacturer's website.