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MathML Strengthens Digital Math Texts
Digital texts are moving beyond simply putting pages on a computer screen.
In Kentucky, a small pilot study is demonstrating the benefits of this textbook technology for students with different learning styles. Instead of re-creating a complex math problem as a static image file, digital texts that use math markup language, or MathML, are able to speak words and equations while highlighting corresponding elements on a computer screen.
MathML-enabled digital texts helped the study's very small cohort of students struggling with printed text outperform peers who used traditional print texts. Many students said that before MathML, they'd see a problem but not know how to say it. Hearing the formula and how to say it was a big help to these students.

From ASCD http://ascd.typepad.com/blog/2008/10/mathml-strengthens-digital-math-texts.html
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