More than readable pictures.
Every published visual lesson includes text alternatives, a concise gist and a longer visual description where it adds meaning.
Choose how to read
Every fresh lesson opens as a naturally scrolling Article. On mobile, learners may choose Picture frames for one large picture at a time; that choice is remembered only in the same browser. Visible buttons remain available alongside gestures.
Motion and contrast
The interface respects reduced-motion and forced-color preferences. Presentation animations are optional; the complete hierarchy and lesson content remain usable without them.
Keyboard and assistive technology
Links remain native links, controls have accessible names, dialogs keep keyboard focus, and each mathematical image has an approved text description.