Want to learn more? Sign up for a free five-week email mini-course full of research-backed strategies to help students make sense of math. In Sarah Cuddihy’s 1st grade class at Driscoll School here, ...

Forbes contributors publish independent expert analyses and insights. Linda Darling-Hammond is an expert on education research and policy. This blog was updated on June 24, 2026 to clarify a statistic ...

Geometry is an important branch of mathematics, which we use to understand the properties of 2D and 3D space such as distance, shape, size and position. We use geometry every day: cutting paper to ...

The Pythagorean Theorem, a cornerstone of geometry, empowers students to solve right triangle problems and unlock advanced mathematical concepts. Mastering this theorem enhances logical reasoning, ...

At the beginning of a recent math class, students spent six minutes discussing a topic they knew well: themselves. What’s their favorite food? Answers came in English and Spanish—“todo” (everything), ...

What mathematical knowledge do elementary teachers use in teaching? About 10 years ago, Deborah Ball and her colleagues at Michigan State University carried out a research project to address this ...

Imagine a classroom full of bright young students, all striving to do their best on a high school math test. They sit, heads slightly bowed, pencils ready, each one thinking about how to tackle each ...