For these sixth graders, transitioning from arithmetic to algebraic thinking involved developing new meanings for symbols in expressions and equations.

Members of the Editorial Panel are spotlighting articles from the twenty-three-year history of MTMS. In this offering, the takeaways include student thinking and student voicing.

To explore properties of quadrilaterals in a creative setting that focuses on discovery over memorization, assign your students the Wolves and Sheep problem.

Students use scientific notation to calculate how long it takes light to travel a variety of astronomical distances and then interpret the significance of their findings.

This article provides an overview of the eight effective mathematics teaching practices first described in NCTM’s Principles to Actions: Ensuring Mathematical Success for All.