Second graders will no longer learn multiplication tables ... shapes and more about building and deconstructing them. Common Core standards for kindergarten through 3 rd grade math also require ...

Sean Nank is a math expert who is helping teachers to implement the Common Core standards ... to see the tens and ones. 10 + 3 is 13; 3 + 7 is another set of 10 and that’s 20. Being able to do that ...