The focus of this study is to ensure that the mobile and web calculation apps are accessible to those with visual impairments and that it is translated into each supported language (Nigerian and Spanish).
• Is the contrast sufficient for those with moderate visual impairment to see the content without additional visual aids?
• Is the content alternative text correctly translated into Spanish?
• Is the content alternative text correctly translated into Nigerian?
• Is the content alternative text correctly translated into English?
We used a moderated study design, survey selection, and post-use interview format. No responses were recorded, but answers were instead documented during the interview.
• Time on task
• User error rates
• System usability scale
• Ease of use of navigation
Carla: As a visually impaired woman I want a more accessible user experience with high-contrast designs that are easy to read so that I can use the site like those without vision impairment.
Problem: Carla is a moderately visually impaired student who needs a calculus learning application that uses a high-contrast design because neutral colors are difficult for her to see.
Shania: As a Latino American user, I want to have bilingual alternative texts available so that I can share the site with my Latino parents. Problem: Shania is a Spanish-speaking student who needs a calculus learning application that uses Spanish alternative texts because alternative texts help her to better understand the calculations.
Rachel: As a Nigerian-American user, I want to have additional alternative texts available for website content so that I can share the site with my Nigerian parents. Problem: Rachel is a Nigerian-Speaking student who needs a calculus learning application that uses Nigerian alternative texts because alternative texts help her to better understand the calculations.
- Android Samsung Galaxy S21 is the most common Android model. Dimensions: 151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
- Desktop 24” is the most common desktop size. Dimensions: 1920 x 1080 pixels
- Desktop Ultra Wide is the largest expected resolution. Dimensions: 3440 x 1440
| Category | Description |
|---|---|
| Introduction | The focus of this study is to ensure that the mobile and web calculation apps are accessible to those with visual impairments and that it is translated into each supported language (Nigerian and Spanish). |
| Research Questions | • Is the contrast sufficient for those with moderate visual impairment to see the content without additional visual aids? • Is the content alternative text correctly translated into Spanish? • Is the content alternative text correctly translated into Nigerian? |
| KPIS (Key performance indicators) | Key performance indicators include: Time on task, user error rates, system usability scale, and use of navigation. |
| Methodology | We used a moderated study design, survey selection, and post-use interview format. No responses were recorded, but answers were instead documented during the interview. |
| Participants | anonymous |
| Target User | Visually impaired, bilingual, Nigerian, and Spanish-speaking students. |
| Constraints | 6-week time constraint, limited budget, single developer / single designer, small team. |
| Key Insights | • Darker colors were preferred by those with visual impairment for higher contrast. • Alternative texts were helpful in Spanish. • Alternative texts were helpful in Nigerian. • We also saw improved user engagement measures associated with alternative texts in English compared with no alternative texts for English users. |
| Project Description | Project Image Preview |
|---|---|
| Calculus Helper is an antiderivative and derivative calculator programmed to assist with mathematical modeling. This is the desktop application. |  |
| This is the Java Android mobile app version. It has new graphing features to visualize derivatives, integrals, or both. High-contrast colors were selected to allow greater accessibility to those with visual impairments. |  |
Multi-language alternative text research and implementations are still required. Java is recommended for the responsive website.