Now that explaining your mathematical thinking is included in the 2nd grade common core state standards and it is included frequently in our new edition of Everyday Math some questions have arisen. Explaining your mathematical thinking verbally and coherently in writing is a developing skills for second graders. It comes gradually and is not like a light bulb getting switched on. Rest assured we are working on it in class together and students have the chance for independent practice. It is just the beginning of the year so we need not be anxious and worry that students need to be great at it right now. The second grade standards are standards to meet by the end of second grade. I think some mathematics sites have some really good information for parents. One of my favorites is this Scholastic post. Click here. Several of my favorite sections I will quote below but head over for the full post. "Learning how to use language and mathematical thinking benef...