![]() ![]() The background and text of the keys vary in color, including white, black, grey, blue, and green. ![]() For even more tactile discernment a nib could be added to the 5 key on the number pad. The keys on the Orion are fairly easy to distinguish by touch, with variation from convex to concave for quick recognition. The Orion TI-84 Plus Talking Graphing Calculator is almost an exact replica of the Texas Instruments TI-84 Plus graphing calculator used by sighted students, except the Orion has an additional "add-on" component consisting of11 additional keys located above the calculator's display screen. This article gives the lowdown about this exciting, innovative product. Being visually impaired, I was delighted when I discovered that the American Printing House for the Blind (APH) and Orbit Research had formed a partnership to create an accessible version of the TI-84 Plus graphing calculator by Texas Instruments. Over the past few years, the fields of science, technology, engineering, and mathematics (STEM) have become hot topics among people with vision loss. ![]()
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