Pentagons and the Golden Ratio - Numberphile

A Miraculous Proof (Ptolemy's Theorem) - Numberphile

Way Bigger Than Graham's Number (Goodstein Sequence) - Numberphile

Darts in Higher Dimensions (with 3blue1brown) - Numberphile

Epic Circles - Numberphile

Simulating the Evolution of Aggression

The Golden Ratio: Nature's Favorite Number

The Goat Problem - Numberphile

Epic Induction - Numberphile

The Golden Ratio: Is It Myth or Math?

Regular Pentagons and the Golden Ratio

Way beyond the golden ratio: The power of AB=A+B (Mathologer masterclass)

Superhero Triangles - Numberphile

The Banach–Tarski Paradox

The Golden Ratio (why it is so irrational) - Numberphile

Pre-Algebra Final Exam Review

How Imaginary Numbers Were Invented

Conway Checkers (proof) - Numberphile

The Silver Ratio - Numberphile

The Infinite Pattern That Never Repeats

How To Calculate Any Square Root