Imagine someone trying to sell you a car with a speedometer but no engine.... Patrick Walsh, Raging Horse Blog
Patrick Walsh nails the common core.
Somehow in the frenzied production of all these Common Core based paraphernalia, both city and state failed to insure the production of the element most essential to the possibility of the Common Core having any kind of real educational success. Somehow both city and state failed to produce a curriculum. It is difficult to overestimate how grand a failure this is.
There's a scene in the movie "Lincoln" where he does geometry - If A=B and B=C then A=C -- easy and obvious -- not so easy 2300 years ago.