Well, it's one of Pearson Education's products to deal with The Coming Storm-- er, Common Core.
So this is evidently what they envision being adopted in lieu of pre-algebra? Algebra? Geometry? Kind of some of all of that?
It's a hot mess, from what I can tell.
Basically, the approach isn't "integrated" the way that any sensible person would imagine that approach to work... more like "blended" with a heavy dose of our old friend "spiraling pedagogy" thrown into the mix.
In other words, the intent seems to be to frighten er-- enlighten... the students with snippets of a LOT of math that they aren't yet prepared to actually tackle themselves.
But no worry-- we'll come back to all of that later, so I guess... just.. survive the skirmish and move on?
