This book, by a journalist and not an educator, hits the nail on the head when the author states that our educational research in the US is fantastic, and the level of implementation in the classroom is deplorable. I remember a phrase from Richard Elmore that talked about the stormy sea in which educational research is being debated, with fierce battles between researchers and politicians and district leaders. But as you go down below the surface of that raging storm, you go to the bottom of the sea, where instruction is actually happening, and all you see is a little swaying back and forth. Nothing really changes. The question Ms. Green asks is why is our math instruction so static, when it goes against all of our own research. I loved it.