At Del Rio STEM Academy, a magnet school in Oceanside Unified School District, first-grade teacher Katherine Sebastian uses her hands as she talks through math problems. Her hands come together in a ...

In a bid to improve state test scores, New York City public schools have embarked on a major undertaking to standardize math instruction across its middle and high schools — but some teachers have ...

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 ...