Kaleidocycles are a three-dimensional paper sculpture you can turn around and round! Flexagons were first created by Arthur Stone at Princeton University in 1939, which were later published in 1959 to the general public in Scientific American. These are simple to make…
Cryptarithms are a puzzle where the digits are replaced by letters or symbols. When the numbers are replaced by letters of the alphabet and it spells something readable, it’s called Alphametics. Download the student worksheet that goes with this lesson.…
Ever wonder what sines, cosines and tangents are used for in the real world? The truth is, most kids and teachers that study this stuff DON’T actually understand what it’s useful for! So let’s take a sneak peek at a…
Everyone old enough to remember the Rubik’s Cube craze of the 1980s in the USA also remembers how it was near impossible to solve the thing! Originally created by a professor of architecture Erno Rubik, it was sold to a…
Polybius was an ancient Greek who first figured out a way to substitute different two-digit numbers for each letter. In the Polybius cipher, we’ll use a 5×5 square grid with the columns and rows numbered. Take a look at the…
Cryptograms are solved by making good guesses and testing them to see if the results make sense. Through a process of trial and error, you can usually figure out the answer. Knowing some facts about the English language can help…
Here’s an interesting math puzzle. If you’re at a concert that’s also being broadcast live on the radio, who will hear the music first? Will it be you, or people listening on the radio? In this video, I’ll show you…
In math, probability is how likely it is that something will occur (or not). Probability is expressed from a range from 0 to 1. A probability of zero means that a thing will definitely not happen – it’s impossible. But…
Imagine that you are on a game show with a chance to win a car. There are three doors and the car is behind one of them. You just have to choose the correct door! You can use probability to…
Sadly, most kids get scared off too soon with math courses that don’t make a lot of sense. For the kids who do make it to calculus, this is the class that will finally finish them off without hesitation, and…
Fractals are new on the mathematics scene, however they are in your life everyday. Cell phones use fractal antennas, doctors study fractal-based blood flow diagrams to search for cancerous cells, biologists use fractal theory to determine how much carbon dioxide…