Puzzle
This Math Trick Only Works for Everyone at the End of the Year
So it’s the perfect way to usher in the new year
Arithmetic
Field Theory
A Finite Number Of “Numbers”
What exactly is arithmetic on a field of numbers which are merely elements in some set?
Babylonian
A Modern Look at Square Roots in the Babylonian Way
Revisiting the Babylonian method for square roots: why and how does it work?
Arithmetic
The Fundamental Theorem of Arithmetic
Over 2,300 years ago Euclid proved the Fundamental Theorem of Arithmetic. Now it is our turn.
Open Problem
The Collatz Conjecture
Some shocking results from 180,000 iterations
Arithmetic
Multiplication is Repeated Addition
The strange debate and controversy in K-12 math education