WordMelodies: Supporting Children with Visual Impairment in Learning Literacy
Sergio Mascetti, Giovanni Leontini, Cristian Bernareggi, Dragan Ahmetovic · 2019 · Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS) · doi:10.1145/3308561.3354587
Summary
This demonstration paper presents WordMelodies, an inclusive cross-platform mobile application designed to support children with visual impairments in acquiring basic literacy skills. The app provides eight different exercises targeting foundational reading and writing abilities. WordMelodies was developed through an iterative design process involving three domain experts in assistive technologies and education for children with visual impairments, who participated in three cycles of design and evaluation. The app is built as a cross-platform application to maximize reach across different mobile devices. The iterative expert evaluation process refined the app's accessibility, resulting in a fully accessible application with only one remaining limitation attributable to the cross-platform development toolkit rather than the app's own design. The inclusive design approach means the app is intended to be usable by both sighted and visually impaired children, supporting use in inclusive classroom settings where children with and without visual impairments learn together.
Key findings
The app includes eight distinct exercise types for building literacy skills, designed to be accessible through screen readers and other assistive technology features on mobile devices. The three-iteration expert evaluation process with domain specialists in both assistive technology and education for visually impaired children ensured that the exercises were both pedagogically sound and technically accessible. The cross-platform development approach (enabling deployment on both iOS and Android) was chosen to maximize availability, though this introduced one accessibility limitation inherent to the toolkit used. The inclusive design philosophy — making the app work for both sighted and visually impaired children — is a deliberate choice that supports integrated educational settings rather than creating a separate tool exclusively for children with visual impairments.
Relevance
WordMelodies addresses a fundamental educational challenge: children with visual impairments need to develop the same literacy skills as their sighted peers, but many educational apps and tools are designed with visual interfaces that assume sight. Early literacy acquisition is critical for academic success, and delays caused by inaccessible learning tools can compound over time. The inclusive design approach — creating an app usable by all children, not just those with visual impairments — supports the trend toward inclusive education where children with disabilities learn alongside their peers. For accessibility practitioners, the paper highlights a practical tension in mobile app development: cross-platform toolkits offer broader reach but may introduce accessibility limitations that native platform development would avoid. The iterative expert evaluation methodology, involving specialists in both education and assistive technology, provides a model for developing accessible educational tools where the target users (young children) may not be able to participate directly in traditional user-centered design processes. The focus on literacy — one of the most foundational skills — underscores that accessibility interventions have the greatest impact when applied to core educational activities.
Tags: visual impairment · children · literacy · education · mobile application · inclusive design · assistive technology · accessibility · cross-platform