Mackenzie Geiger, left, explains her thinking to Cameron Tormone on a math problem in Dana Snapp's class at Fuquay-Varina Elementary School. Students there have been using Common Core Math for the ...
An Iowa woman jokingly calls it "Satan's handiwork.'' A California mom says she's broken down in tears. A Pennsylvania parent says it "makes my blood boil.'' What could be so horrible? Grade-school ...