The Math Problem: The U.S. Air Force’s B-21 Raider is set to replace aging bombers, but experts argue 100 units may not be enough. Key Points and Summary: With China developing its H-20 stealth bomber ...

Practice time! Build, read, & write three-digit numbers using base-10 blocks and symbols. Practice time! Build, read, write (in standard and expanded form), and represent three-digit numbers using ...

Remember the days when working a math problem resulted in a right or wrong answer, and parents had a basic grasp of how to help their children with math homework? Those days predated the Common Core ...

On a crisp fall New England day during my junior year of college, I was walking past a subway entrance when a math problem caught my eye. A man was standing near a few brainteasers he had scribbled on ...

Here’s a simple-sounding problem: Imagine a circular fence that encloses one acre of grass. If you tie a goat to the inside of the fence, how long a rope do you need to allow the animal access to ...

Mathematicians have long pondered the reach of a grazing goat tied to a fence, only finding approximate answers until now. Here’s a simple-sounding problem: Imagine a circular fence that encloses one ...

A famous problem in mathematics that has remained unsolved for almost 160 years probably still is — despite a new claim by a retired mathematician that he has cracked it. Michael Atiyah, a professor ...

An eminent mathematician reveals that his advances in the study of millennia-old mathematical questions owe to concepts derived from physics. Mathematics is full of weird number systems that most ...

It's been a familiar scene in Louisiana public schools for more than a decade, that point in fourth grade when students learn how fractions are related to decimals. Judy Milford is teaching the ...