Speech-interactive calculator
Numeracy and the ability to manipulate numbers is essential to STEM education. NCTI's recent case study highlights this:
Students who are blind or have low vision have been at a disadvantage with few tools designed for their needs. With the growing prevalence of math mark-up language, MathML, assistive technology researchers knew that a speech-interactive calculator would fill a need and be able to take advantage of new digital content. This 2008 Technology in the Works research project developed an on-screen calculator that shows real promise as a compensatory tool, but even more importantly, as a learning tool.
To read more, click on http://www.nationaltechcenter.org/index.php/2009/10/13/case-on-screen-speaking-calculator-improves-access-to-higher-math/.