We like to think that we're pretty good at math, especially after years of schooling. But every once in a while, a simple third-grade math problem manages to trip us up and make us question our ...

Use visual fraction models to add and subtract fractions with the same denominators. Use visual fraction models to add and subtract fractions with the same denominators. Notice patterns in the ...

Fractions knowledge by grade 5 uniquely predicts success in higher mathematics. Yet, assessments show that too many students struggle with this critical foundational math skill from grade 3 onward.

Students build the foundations for dividing a whole number by a unit fractions This lesson helps students build the foundations for dividing a whole number by a unit ...

A key part—though surely not the only part—of early-grades math is ensuring students get the basic arithmetic functions down and, beyond that, making sure they’re able to swiftly and automatically ...

As a mathematics education researcher, I study how math instruction impacts students' learning, from following standard math procedures to understanding mathematical concepts. Focusing on the latter, ...