Even if it could be done, comparing "one lesson" would be a completely useless exercise. There is no substitute for actually examining and comparing books side by side, as I have done. For example, if you will actually compare the Euclidean Geometry books that I discussed at the link below, you will find that:
1. My high school textbook contains a 10-page introduction to basic notions and postulates. The next 11 pages cover various constructions and axioms. Congruent triangles and proofs start on page 29.
2. The Jurgensen-Dolciani book forced students to plow through a 190-page quagmire before congruent triangles come up.
The power of the written word is eternal, and no amount of sophistry--and no amount of flimflam on your part--can deny the fact that the Dolciani series demolished the traditional college preparatory mathematics curriculum in the U.S.
On 17 Sept 2011, Guy Brandenburg wrote: > > You make claims --the same ones over and over-- and > copy tables of contents. That is not the same as > providing documentation. > > Recall my challenge: pick any lesson or topic on > anything you like, and examine fairly and thoroughly > how four different textbooks -- from any authors you > like (or hate), any publishers, and any era. > > Then you will have done something useful. > > Guy > > On Sep 17, 2011, at 3:32 PM, Domenico Rosa > <DRosa@post.edu> wrote: > > > I have in fact spent a considerable amount of time > documenting how the Dolciani series demolished the > college preparatory mathematics curriculum. How much > time have you spent on this grim exercise? To get an > idea of what happened to Euclidean Geometry see my > post at: > > > > > http://mathforum.org/kb/thread.jspa?forumID=206&thread > ID=482893 > > > > On 16 Sept 2011, Guy Brandenburg wrote: > > > >> Oh my god. The table of contents gives away the > >> entire evil scheme, eh? I think you need to go > >> into more detail than that, dom. > >> In fact, I notice that when trying to enlighten us > >> hicks to the evil wiles of la Donna Dolciani, you > >> almost always ONLY mention or quote the TOC.