Playlist: Math
What’s In My Brain: Pentagon vs Pentagon
We’re looking at regular vs irregular polygons.
Crossing Every Bridge Exactly Once (aka Eulerian Paths)
How can you cross each bridge in this city exactly once?
An Olympic Sized Pool and Jet Fuel (Episode 3)
How many times could you fill up a jet plane using the fuel that would fit in an olympic-sized pool?
Parabolic Curve Art
Create mathematical art with curves that, well, aren’t curvy.
Writing in Pilish
Pi can go beyond circles! What if you wrote using the digits of pi as your guide?
Measurement: An Elephant
What if I told you that an elephant weighed a back-breaking 176,000? Could you figure out the unit I’m using? But… how many corgis would that be?
Math Curiosity: Ulam Spiral
What if we make a huge spiral of numbers and then highlight only the primes? Well, a bunch of weird patterns show up!
What’s In My Brain: Trapezoids or Not?
Which are trapezoids and which are not?
Calculators, Patterns, and Multiplying By Decimals
Before teaching students the procedure for multiplying with decimals, how much can they intuitively glean from a structured play session with calculators?
Math Curiosity: Magic Squares
Imagine a 3×3 square in which every row, column, and diagonal have the same sum. That’s a magic square!
Math Curiosity: The Coloring Problem
No video gets me more email from students! How few colors can you use to color in any map so that no two, neighboring regions are the same color?
Fractals: Koch Snowflake
You could keep zooming in on this snowflake forever!
Math Curiosity: Primes and Squares
Can any perfect square be written as the sum of two primes?
Math Curiosity: Finding Primes
Prime numbers are unpredictable! How can we possibly find them all? An Ancient Greek mathematician found one way!
Math Curiosity: Twin Primes
What do you call two prime numbers who are very close together?
Discovering Pi With Sticky Notes
Pi is mysterious and strange! Why not let students discover it on their own?
Exploring Circumference With Famous Circles
Let’s find how the diameter and circumference of famous circles are related.