The video-first method
Not a video about the topic. The video of the pages.
Most study videos replace the book. Ours are made from it.
Each video is cut into the same sections the chapter prints, cites the same figures by number, and raises the same questions the margin boxes do — so what you watch and what you’ll be examined on are the same thing. Nothing is taught that the chapter doesn’t teach; nothing the chapter teaches is skipped.
When the book says do — an activity, a measurement, a table to fill — the video marks it, and the index beside the video lists every one of those markers. Pause it, do the thing with a real ruler, and press play. That is what the marker is for.
A five-question check closes every topic, and a topic only counts as covered once the video is watched and the check is passed. A wrong answer comes back with the right one and the reason for it, and the video is one tap away — so revision goes to the topic that needs it, not the whole chapter again.
The printed chapter is one tap from the video — the same pages, in a reader, for the evening the textbook stayed in the desk.