You pay for a latte with money from your Starbucks app, so your bank account balance doesn’t change. That means the coffee was basically free, right? This is just one example of “girl math,” a trend ...

There is a lot more to math than just equations on a chalkboard. It is a very useful set of tools for tackling problems in many different fields. Math tactics affect our environment in ways that most ...

Kayla Thuemler, a first grade teacher in Milwaukee, shows other teachers how she solved a subtraction problem during a professional development session on math teaching. Credit: Abby J. McFarland for ...

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 ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...