Practice should be accessible

You should be able to use the main learning path with a keyboard, touch input, or assistive technology.

Built into the practice

• Labelled inputs and visible keyboard focus.
• Button alternatives to dragging a point or shading a model.
• Text descriptions of the information shown in diagrams.
• Results explained in words, with colour as an additional cue.
• No timed questions, flashing content, or required animation.
• Reduced-motion preferences are respected.

On paper and on screen

Worksheets use large text, separate answer keys, and space to show thinking. Available sizes are US Letter and A4. The HTML skill page provides a readable alternative to a PDF.

We aim for WCAG 2.2 AA on the main path. An automated check or tagged PDF alone does not establish complete accessibility conformance.