by Barry Garelick, The Atlantic
A set of guidelines adopted by 45 states this year may turn children into "little mathematicians" who don't know how to do actual math. Here are two discouraging emails I received recently. The first was from a parent:
'They implemented Common Core this year in our school system in Tennessee. I have a third grader who loved math and got A's in math until this year, where he struggles to get a C. He struggles with "explaining" how he got his answer after using "mental math." In fact, I had no idea how to explain it! It's math 2+2=4. I can't explain it, it just is.'