A personal favorite episode in our home is "Step Squad," about triangular numbers (think: the sum of 1+2+3+4+5). And "Heroes with Zeroes," about multiplying by 10, is a real earworm.

How Much of Our Math Series Did You Retain? Try This Quiz. Test your knowledge of taxicab geometry, triangular numbers, the golden ratio and more.

Harry and Tom have each found a 4-digit perfect square, a 3-digit perfect cube and a 3-digit triangular number that use 10 different digits, but with no leading zero. A triangular number is one that ...

Learn about how triangle sequences, quadratic sequences and the common difference with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

How a centuries-old math puzzle helped us see inside the human brain. By Steven Strogatz Photo illustrations by Jens Mortensen Each installment of “Math, Revealed” starts with an object, uncovers the ...