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Texas Instruments TI-89 Titanium Graphing Calculator

For high school students braving advanced math and science courses this fall, Texas Instruments' TI-89 Titanium graphing calculator is a backpack essential.

Considered by Texas Instruments to be its "most powerful graphing calculator" to date, the TI-89 comes pre-loaded with 16 apps, including NoteFolio, a basic word processing solution that lets users type class notes and share them with other TI-89 users through the calculator's built-in USB port. The TI-89 is also allowed to be used during the SATs, along with several Advanced Placement (AP) exams.