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Navigating Math Expressions with Synthetic Speech

This project explores math accessibility through magnification, Braille, and customized speech for visually impaired learners. It focuses on using synthetic speech to improve navigation and understanding of math expressions. The research conducted by Lois Frankel, ETS, and Susan Osterhaus aims to enhance educational opportunities for blind or visually impaired students in algebra classrooms using innovative software and tools.

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Navigating Math Expressions with Synthetic Speech

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  1. Navigating Math Expressions with Synthetic Speech Lois Frankel Educational Testing Service (ETS) Susan Osterhaus Texas School for the Blind and Visually Impaired CEC April, 2014

  2. What are we talking about? • Math accessibility – big picture: • What is math accessibility? • Grant Project & Goals • Navigation: discussion and demonstration • Project Status

  3. Math Accessibility • Magnification • Braille • Speech • Customized for listener’s needs • Sync highlighting • Navigation

  4. Math Accessibility • Magnification • Braille • Speech • Customized for listener’s needs • Sync highlighting • Navigation MathML MathML MathML MathML

  5. IES ETS/DSI Project • Background • Goals • What got left out • Software that is part of the project

  6. Prior to IES ETS/DSI Project • Speech • Limited choice of syntax/semantics • Difficult to author • No Navigation • Access limited to the Web

  7. Project Goals • Middle/High school algebra • Classroom-like synthesized speech “style”: ClearSpeak • Customization features • Interactive navigation • Author in Word • Playback in Word and in browsers

  8. Not Part of Project • Braille • Support for graphics • *Authoring by people with visual impairment • Solving math problems • Tutoring/Curriculum

  9. Project Software for Math • MathML Tools: • Authoring: MathType+Word • Audio rendering: MathPlayer • Screen reader • Window-Eyes (MathType+Word & IE)

  10. Navigation • Zooming & moving around • Reading vs. describing • Placemarkers & “Where am I?”

  11. “Large” Expressions MathPlayer 4 will read this equation and others in this presentation, but not if you’re viewing the presentation in Slide Show view.

  12. Zooming and Moving

  13. Reading vs. Describing

  14. Placemarkers & ‘Where am I’

  15. Navigation Summary • Read/Describe • Previous/Current/Next/Placemarker • Move • Previous/Current/Next/Placemarker • Child/Parent (Zoom)

  16. Navigation Summary (2) • 10 Placemarkers • Set/Read/Describe/Move • Where am I? • One level & complete expression

  17. Accessible Authoring • LaTeX to MathML conversion in Word • MathML to LaTeX conversion in Word

  18. Project Status • Development: • Done: ClearSpeak, Authoring, Nav, Word • Planned: Nav in tables, column arithmetic • Studies • Done: ClearSpeak, Prosody • Planned: Nav, Authoring, Final Pilot

  19. Participation Opportunities • Students who are Blind or Visually Impaired • Teachers

  20. Contact Information • Lois Frankel: lfrankel@ets.org • Susan Osterhaus: osterhauss@tsbvi.edu • MathPlayer Alpha: beta@dessci.com The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through Grant R324A110355 to the Educational Testing Service. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education, nor those of the CEC.

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