states: "It suggests, for instance, that elementary math textbooks should be fewer than 200 pages in length."
This would be an excellent start for putting the doorstop-publishing mafia out of business.
Recently I had the grim experience of examining the doorstop Math Connects: Concepts, Skills, and Problems Solving, Course 2, Student Edition (MATH APPLIC & CONN CRSE) , which has 750 pages plus an additional 68 pages at the end. This doorstop has the mug shots of 12 co-authors, including Jack Price, a past-president of the NCTM who was a leading promoter of the 1989 NCTM "standards." This doorstop also lists 16 consultants and 45 reviewers--which is indicative of the highly irresponsible people who are writing, publishing, editing, promoting, and adopting these doorstops that are saturated with junk.
Edit: Page 19 at http://corestandards.org/assets/Math_Publ
"(For paper-based materials.) A textbook that is focused is short. For example, by design Japanese textbooks have less than one page per lesson. Elementary textbooks should be less than 200 pages, middle and secondary less than 500 pages."