As we’ve noted before, when proponents of the Obama Administration’s Common Core education reforms try to make the case for the program, they often end up giving material to its opponents. Case in point: the Center for American Progress (CAP), in a recently released report on The Cognitive Science Behind the Common Core, attempted to show how much easier Common Core math is than traditional means of mathematical problem-solving: “Elizabeth is at the grocery store buying fruit for the week. She wants to purchase $7.60 worth of apples with a $20.00 bill. How much change should the cashier return to...