I'd like to see this philosophy applied to some of the open content out there already like the OpenStax textbooks [0]. For example, the Prealgebra text is 1152

I'd like to see this philosophy applied to some of the open content out there already like the OpenStax textbooks [0]. For example, the Prealgebra text is 1152 pages in the PDF format. I think there would be a huge amount of value in distilling these down to chapters which are 10-15 pages each instead of 100-150 pages each. Of course you would loose a lot of detail, but they could serve as a summary of 'this is the important stuff you need to know'. The expanded textbooks would serve as reference material if you want to go into more detail. [0] https://openstax.org/ https://openstax.org/