When my students grow too dependent on their calculators, I ask them to find a number that, when multiplied by itself, gives them 2. Students quickly see that since 1² = 1 and 2² = 4, the answer has ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Originally defined as the ratio between the circumference of a circle and its diameter, pi — written as the Greek letter π — appears throughout mathematics, including in areas that are completely ...

Add Yahoo as a preferred source to see more of our stories on Google. Irrational numbers such as pi or the square root of 2 have always fascinated humankind. After all, they symbolize infinity better ...

A comprehensive, no-prep maths resource packed with 40 structured questions to master rational number operations and order of operations (BODMAS/BIDMAS). This progressive worksheet seamlessly guides ...

The ancient Greeks wondered when “irrational” numbers can be approximated by fractions. By proving the longstanding Duffin-Schaeffer conjecture, two mathematicians have provided a complete answer. The ...

Some numbers can’t be written down exactly in decimal form – doing so would take an infinite number of digits. Such numbers are known as "irrational". The geometric constant Pi and the square root of ...

Irrational numbers such as pi or the square root of 2 have always fascinated humankind. After all, they symbolize infinity better than anything else: their sequence of digits after the decimal point ...