Math Examples
If you use mathematical or scientific notation placed as a graphic, be sure to include Alt text that accurately "reads" the notation.
Including adequate ALT text allows the screen reader to correctly pronounce the equation.
The ALT
text for the above graphic is coded like this: <IMG SRC="algebra.gif" WIDTH="162" HEIGHT="26" ALT="A
cubed plus B cubed equals the quantity A plus B times the quantity
A squared minus A,B plus B squared.">
The ALT text for the above graphic is coded like this: <IMG SRC="trig.gif" WIDTH="187" HEIGHT="21" ALT="Sine of the quantity A plus B equals the quantity sine A times cosine B plus the quantity cosine A times sine B.">
Further Information
The World Wide Web Consortium is also concerned about math and scientific notation on the web. Use the following links for further information into their findings and research.
- http://www.w3.org/Math
- http://www.w3.org/Math/whatIsMathML.html
- http://www.w3.org/Math/mathml-faq.html
- http://www.w3.org/Math/implementations.html
Portions of this website are used with permission from Penn State University.