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Predict & Prove
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Accessibility

Effective September 14, 2026

Our goal

Every student in a class should be able to run a Predict & Prove station. We design and test the public station against the Web Content Accessibility Guidelines (WCAG) 2.1, level AA.

What the station supports

  • Every control works with a keyboard, including sorting forces, which never needs dragging.
  • A visible focus ring shows where the keyboard is.
  • Each scene drawing has a text description that updates as the test runs.
  • Light and dark themes, and color is never the only way information is shown.
  • Reduced motion: when a device asks for less motion, scenes skip decorative movement and readings stay correct.
  • Buttons and controls are large enough to tap on a touch screen.
  • It runs in the browser on shared school Chromebooks, with nothing to install and no student account.
  • Student-facing text is written for fifth grade and reviewed by a classroom teacher.

How we check

We test the public station with automated accessibility checks (axe) in light and dark themes, complete it with the keyboard alone, and check it on Chromebook-sized screens and phones before release. Automated checks do not catch everything, so we also want to hear from you.

Known limits

Some scenes show motion that is easiest to understand by watching. Their text descriptions and the recorded results give the same information in words.

Report a problem

Tell us through the Q&A tab of the Teachers Pay Teachers product page where you got this resource. Include the station, the step, and the device or assistive technology you were using.