Stênio Abreu
ABSTRACT
The teaching of mathematics for visually disabled users still has limitations. One such limitation is related to limited reading of mathematical expressions by screen reading software. With the technological advances, the use of assistive technologies by these people became fundamental for the educational process. However, this technology still has gaps in the ability to read complex expressions and language support, especially in the Brazilian context. Thus, the present study presents usability tests involving visually disabled users on a prototype of screen reading software with reading of mathematical formulae in Brazilian Portuguese and intra-formulae navigation features, named ChromeVox-NavMatBR system. The tests involved 12 users. The evaluations involved the assessmenet of features related to navigation, reading and comprehension of mathematical expressions. Finally, quantitative and qualitative data were collected regarding the use of the system. The study encountered problems related to prosody aspects in formulae reading, response time, comprehension of specific technical terms, and reading of complex mathematical elements. The results in this paper are very important to direct continued development of interactive features to support reading and navigation in complex mathematical content on the Web for people with visual disabilities.
- Simone Barbosa and Bruno Silva. 2010. Interação humano-computador. Elsevier Brasil.Google Scholar
- John Brooke et al. 1996. SUS-A quick and dirty usability scale. Usability evaluation in industry 189, 194 (1996), 4--7.Google Scholar
- World Wide Web Consortium. 2008. Web content accessibility guidelines (WCAG) 2.0. Disponível online em http://www.w3.org/TR/WCAG20, acesso em 20 de agosto de 2019.Google Scholar
- Albert M. Cook and Janice Miller Polgar. 2014. Assistive Technologies-E-Book: Principles and Practice. Elsevier Health Sciences.Google Scholar
- João Marcelo dos Santos Marques, Simone Bacellar Leal Ferreira, and Claudia Cappelli Cappelli. 2018. Catálogo e um Guia para orientar analistas web na construção de sites governamentais para o entendimento de informaçães gráficas para cidadãos cegos à luz da transparência da informação. iSys-Revista Brasileira de Sistemas de Informação 11, 1 (2018), 71--102.Google Scholar
- Joseph S. Dumas, Joseph S. Dumas, and Janice Redish. 1999. A practical guide to usability testing. Intellect books.Google Scholar
- Alistair DN Edwards. 1989. Modelling blind users' interactions with an auditory computer interface. International Journal of Man-Machine Studies 30, 5 (1989), 575--589.Google ScholarDigital Library
- Alistair DN Edwards, Heather McCartney, and Flavio Fogarolo. 2006. Lambda:: a multimodal approach to making mathematics accessible to blind students. In 8th International Conference on Computers and Accessibility (ASSETS). 48--54.Google ScholarDigital Library
- Karl Anders Ericsson and Herbert Alexander Simon. 1993. Protocol analysis. MIT press Cambridge, MA.Google Scholar
- Helder Ferreira and Diamantino Freitas. 2006. Leitura de Fórmulas Matemáticas para Cegos e Amblíopes: A Aplicação AudioMath. In Atas do IV Congresso Ibero-americano de Tecnologia de Apoio. 137--142.Google Scholar
- Anonymous for blind review. 2017. How Much Effort is Necessary for Blind Users to Read Web-based Mathematical Formulae?: A comparison using task models with different screen readers. In Proceedings of the XVI Brazilian Symposium on Human Factors in Computing Systems. ACM, 29.Google Scholar
- Anonyous for blind review. 2018. Content-based Navigation Within Mathematical Formulae On the Web For Blind Users and Its Impact On Expected User Effort. In Proceedings of the 8th International Conference on Software Development and Technologies for Enhancing Accessibility and Fighting Info-exclusion. ACM, 23--32.Google Scholar
- André Pimenta Freire, Silvana Maria Affonso de Lara, and Renata Pontin de Mattos Fortes. 2013. Avaliação da acessibilidade de websites por usuários com deficiência. In 12th Brazilian Symposium on Human Factors in Computing Systems (HCI). 348--351.Google ScholarDigital Library
- Mick D. Isaacson, Dave Schleppenbach, and Lyle Lloyd. 2010. Increasing STEM accessibility in students with print disabilities through MathSpeak. Journal of Science Education for Students with Disabilities 14, 1 (2010), 3.Google Scholar
- Jonathan Lazar, Jinjuan Heidi Feng, and Harry Hochheiser. 2017. Research methods in human-computer interaction. Morgan Kaufmann.Google Scholar
- MathSpeak. 2004. MathSpeakTM Core Specification Grammar Rules. Disponível em http://www.gh-mathspeak.com/examples/grammar-rules/, último acesso em 03 de novembro de 2018.Google Scholar
- TV Raman. 1994. Audio system for technical readings. Ph.D. Dissertation. Cornell University.Google Scholar
- Andrzej Salamonczyk and Jolanta Brzostek-Pawlowska. 2015. Translation of MathML formulas to Polish text, example applications in teaching the blind. In 2nd International Conference on Cybernetics (CYBCONF). 240--244.Google ScholarCross Ref
- Jeff Sauro and James R. Lewis. 2016. Quantifying the user experience: Practical statistics for user research. Morgan Kaufmann.Google Scholar
- Neil Soiffer. 2005. MathPlayer: web-based math accessibility. In 7th International Conference on Computers and Accessibility (ASSETS). 204--205.Google ScholarDigital Library
- Neil Soiffer. 2007. MathPlayer v2. 1: web-based math accessibility. In 9th International Conference on Computers and Accessibility (ASSETS). 257--258.Google Scholar
- Volker Sorge, Charles Chen, TV Raman, and David Tseng. 2014. Towards making mathematics a first class citizen in general screen readers. In 11th Web for All Conference ((W4A). 40.Google ScholarDigital Library
- Robert D. Stevens, Alistair DN Edwards, and Philip A. Harling. 1997. Access to mathematics for visually disabled students through multimodal interaction. Human-computer interaction 12, 1 (1997), 47--92.Google Scholar
- Wararat Wongkia, Kanlaya Naruedomkul, and Nick Cercone. 2012. i-Math: Automatic math reader for Thai blind and visually impaired students. Computers & Mathematics with Applications 64, 6 (2012), 2128--2140.Google ScholarDigital Library
- Usability evaluation of a resource to read mathematical formulae in a screen reader for people with visual disabilities
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