Using a Rekenrek, work with numbers 11-19, and write equations. Join Mrs. Gray for a Numeracy Talk with Dotson seeing the double ten frame but building what we saw using a Rekenrek. We work with ...

Ian Stewart is a mathematician at the University of Warwick in the United Kingdom. His new book “In Pursuit of the Unknown” is published by Basic Books in the United States in March. In the United ...

Weird Math sets out to “reveal the strange connections between math and everyday life.” The book fulfills that laudable goal, in part. At times, teenage math prodigy Agnijo Banerjee and his tutor, ...

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 ...

An icon in the shape of a lightning bolt. Impact Link Earlier this year, Mathematician Ian Stewart came out with an excellent and deeply researched book titled "In Pursuit of the Unknown: 17 Equations ...

We may be celebrating Pi Day here at io9, but we would be irrational to deny that there’s more to mathematical interestingness than simply dividing an object’s circumference by its diameter. Here are ...

Who says math can't be fun?! Try these math puzzles for a delightful challenge. Math is not everyone’s favorite, understandably. Hours of math homework and difficult equations can make anyone sour on ...