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Under the Common Core State Standards in mathematics, fractions instruction extends across grades 3 through 6, with operations being taught after students have a firm understanding of where fractions ...

Students in Melissa Williams' kindergarten class at the Westminster School in Atlanta, Georgia, practice connecting quantities to written numbers — a key part of number sense. Credit: Holly Korbey for ...

Remember the days when working a math problem resulted in a right or wrong answer, and parents had a basic grasp of how to help their children with math homework? Those days predated the Common Core ...

Addition & subtraction strategies to solve two-digit equations using an open number line. In this lesson, students go over using different addition and subtraction strategies to solve two-digit ...