Function
The tile never lists the lesson's videos — that is the module overview's job, and the tile links there however many videos the lesson holds.
On a phone the tile is a row led by its ring; from lg it is a card with an
artwork band the ring overlaps. The lesson holding the video the learner
continues with is edged in gold.
Progress is read on the device, so before it is known the tile states only the lesson's size and draws an empty ring: nothing a returning learner would see contradicted a moment later.
One lesson (module) of the course overview: its artwork, ordinal, a progress ring, a status and how much is left. The whole tile opens the lesson.