Originally Posted by aeh
I couldn't find anything newer, either. One does have to wonder how no usable supportive research was generated in 20-odd years of the first edition, though:

http://ies.ed.gov/ncee/wwc/interventionreport.aspx?sid=56

It does appear that the 2nd edition addresses one of the flaws of the 1st, which was the complete absence of practice with standard algorithms, or math fluency.


I saw that in my early searches and keep thinking that this company must have some really slick salespeople because otherwise how does anyone choose to pay out thousands-or-whatever dollars for a curriculum with NO evidence of effectiveness?