| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S2019E01 | Divisibility Tricks |
January 17, 2019
YouTube
|
25 | |
| S2019E02 | The Graceful Tree Problem |
January 21, 2019
YouTube
|
10 | |
| S2019E03 | The Trapped Knight |
January 24, 2019
YouTube
|
6 | |
| S2019E04 | Card Flipping Proof |
February 3, 2019
YouTube
|
17 | |
| S2019E05 | 1010011010 |
February 11, 2019
YouTube
|
8 | |
| S2019E06 | Heesch Numbers and Tiling |
February 21, 2019
YouTube
|
9 | |
| S2019E07 | A Colorful Unsolved Problem |
February 27, 2019
YouTube
|
10 | |
| S2019E08 | All the Numbers |
March 4, 2019
YouTube
|
14 | |
| S2019E09 | A Million Simulated Seasons |
March 7, 2019
YouTube
|
12 | |
| S2019E10 | 42 is the new 33 |
March 12, 2019
YouTube
|
14 | |
| S2019E11 | The Plastic Ratio |
March 15, 2019
YouTube
|
12 | |
| S2019E12 | What's special about 277777788888899? |
March 21, 2019
YouTube
|
15 | |
| S2019E13 | Infinite Series |
April 2, 2019
YouTube
|
10 | |
| S2019E14 | 90,525,801,730 Cannon Balls |
April 8, 2019
YouTube
|
8 | |
| S2019E15 | How many ways can circles overlap? |
April 14, 2019
YouTube
|
10 | |
| S2019E16 | What's so special about the Mandelbrot Set? |
April 18, 2019
YouTube
|
17 | |
| S2019E17 | A final game with Elwyn Berlekamp (Amazons) |
April 23, 2019
YouTube
|
11 | |
| S2019E18 | EVERY baby is a ROYAL baby |
May 6, 2019
YouTube
|
19 | |
| S2019E19 | Will your name become extinct? |
May 6, 2019
YouTube
|
14 | |
| S2019E20 | Peaceable Queens |
May 15, 2019
YouTube
|
7 | |
| S2019E21 | Game of Cat and Mouse |
May 28, 2019
YouTube
|
19 | |
| S2019E22 | Tribonacci Numbers (and the Rauzy Fractal) |
June 3, 2019
YouTube
|
7 | |
| S2019E23 | Don't Know (the Van Eck Sequence) |
June 10, 2019
YouTube
|
8 | |
| S2019E24 | Necklace Splitting (a lesson for jewel thieves) |
June 18, 2019
YouTube
|
15 | |
| S2019E25 | James ❤️ A Card Trick |
June 25, 2019
YouTube
|
11 | |
| S2019E26 | The Dehn Invariant |
July 14, 2019
YouTube
|
16 | |
| S2019E27 | Frieze Patterns |
August 6, 2019
YouTube
|
13 | |
| S2019E28 | Amazing Graphs |
August 8, 2019
YouTube
|
13 | |
| S2019E29 | Amazing Graphs II (including Star Wars) |
August 14, 2019
YouTube
|
11 | |
| S2019E30 | Amazing Graphs III |
August 22, 2019
YouTube
|
9 | |
| S2019E31 | Navier-Stokes Equations |
August 27, 2019
YouTube
|
21 | |
| S2019E32 | Reynolds Number |
September 4, 2019
YouTube
|
17 | |
| S2019E33 | The Mystery of 42 is Solved |
September 6, 2019
YouTube
|
5 | |
| S2019E34 | 3 as the sum of the 3 cubes |
September 24, 2019
YouTube
|
14 | |
| S2019E35 | The Girl with the Hyperbolic Helicoid Tattoo |
September 29, 2019
YouTube
|
11 | |
| S2019E36 | Where Does River Water Go? |
October 6, 2019
YouTube
|
15 | |
| S2019E37 | The Forgotten Flexagon |
October 17, 2019
YouTube
|
12 | |
| S2019E38 | TREE vs Graham's Number |
October 25, 2019
YouTube
|
24 | |
| S2019E39 | Planar Graphs |
November 11, 2019
YouTube
|
16 | |
| S2019E40 | Darts in Higher Dimensions (with 3blue1brown) |
November 17, 2019
YouTube
|
32 | |
| S2019E41 | Primes without a 7 |
November 20, 2019
YouTube
|
13 | |
| S2019E42 | The Archimedes Number |
November 24, 2019
YouTube
|
9 | |
| S2019E43 | Taking a Turkey’s Temperature |
November 27, 2019
YouTube
|
8 | |
| S2019E44 | Approximating Irrational Numbers (Duffin-Schaeffer Conjecture) |
December 8, 2019
YouTube
|
21 | |
| S2019E45 | A Fascinating Thing about Fractions |
December 15, 2019
YouTube
|
8 | |
| S2019E46 | A Breakthrough in Graph Theory |
December 23, 2019
YouTube
|
25 | |
| S2019E47 |
Pi Million Subscribers
season finale
|
December 24, 2019
YouTube
|
3 |
No artwork of this type.
No artwork of this type.
No artwork of this type.