This full-length online math course reviews K courses and builds upon it to meet and exceed common core curriculum for first graders. It extends addition and subtraction and 100, introduces place value. They learn 2-digit addition and subtraction without regrouping and borrowing. Further, students develop their number sense by being introduced to even/odd numbers, multiplication and division, parts and whole numbers. They develop logical problem solving skills by continuously solving word problems related to the concepts studied.