THIS COMMON CORE METHOD IS TERRIBLE . WHO EVER CAME UP WITH THIS SYSTEM MUST NOT HAVE CHILDREN THAT MAKE C &D'S ALL CHILDREN CAN NOT MAKE STRAIGHT A-B'S gOD MADE US ALL DIFFERENT MENTALLY AS WELL AS PHYSICALLY ! PLEASE SAVE THE LESS INTELLGENT CHILDREN FROM THIS CORE TEACHING . LETS ALL SAY NO TO IT FOR ALL THE SLOWER STUDENTS THAT STRUGGLE . THANK YOU CHESTER AND MARTHA CHRISTENSEN