Graham Fletcher, a K-8 mathematics specialist in Atlanta, GA, has created a series of videos illustrating how concepts are developed across the elementary grades to promote conceptual understanding and procedural fluency. His current videos include the **Progression of Addition and Subtraction**, **Progression of Division**, **Progression of Multiplication**, and **Progression of Fractions: The Meaning, Equivalence, & Comparison**.

## Click here to view Graham Fletcher’s videos.

There is also a document, Development of Number Sense & Computation in Grades K-5, that provides more detail with concept progressions across grades K-5 with specific representations and references from the Common Core State Standards.