The Talking Calculator app can be used to support math comprehension, assist students with math-related learning difficulties, as well as students with visual challenges. The audio can also reinforce student comprehension of numeric elements.
"Ideal for the vision impaired, blind, or anyone looking for an easy to read calculator, with optional speech. This calculator speaks answers, button names and formulas aloud with its built in voice, or with a custom voice recorded directly into the iPad, iPhone or iPod Touch!"
Via Kathleen McClaskey