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Visual & Recreational Mathematics
3Blue1Brown — Grant Sanderson (YouTube) https://www.youtube.com/c/3blue1brown
Grant Sanderson’s animated mathematics channel — the finest mathematical visualization content on the internet. Each video makes a single deep mathematical idea viscerally clear through custom animation software (manim). Topics include linear algebra, calculus, neural networks, the Riemann hypothesis, Fourier transforms, and group theory. The “Essence of Linear Algebra” and “Essence of Calculus” series are definitive visual introductions to their subjects. [→ mathematics; visualization]
Mathologer — Burkard Polster (YouTube) https://www.youtube.com/channel/UC1_uAIS3r8Vu6JjXWvastJg
Monash University mathematician Burkard Polster’s channel for beautiful proofs and mathematical visual demonstrations. Specializes in making deep results accessible through geometry, animation, and careful visual argument — covering infinite series, number theory, Pythagorean triples, and mathematical puzzles. His expositions of “Q.E.D.” moments (where the proof becomes obvious once you see the right picture) are particularly satisfying. [→ mathematics; visualization]
Numberphile (YouTube) https://www.youtube.com/channel/UCoxcjq-8xIDTYp3uz647V5A
Brady Haran’s celebrated series of short videos with professional mathematicians on their favourite numbers and results — covering number theory, combinatorics, graph theory, prime numbers, and mathematical constants. The “Numberphile” approach (mathematician + brown paper + enthusiasm) makes abstract mathematics communicable and enjoyable. [→ mathematics; recreational]
Stand-up Maths — Matt Parker (YouTube) https://www.youtube.com/channel/UCSju5G2aFaWMqn-_0YBtq5g
Matt Parker (“the stand-up mathematician”) makes mathematics entertaining through comedy, puzzles, and deliberate “Parker squares” (well-intentioned but slightly wrong solutions). Covers recreational maths, voting theory, geometry, and the intersection of maths with everyday life. Excellent for appreciating mathematical culture alongside rigour. [→ mathematics; recreational]
Art of the Problem (YouTube) https://www.youtube.com/channel/UCotwjyJnb-4KW7bmsOoLfkg
Animated explanations of information theory, randomness, and the mathematics of compression — covering Claude Shannon’s information theory, Kolmogorov complexity, entropy, and the theoretical foundations of computer science. The clearest visual introduction to Shannon’s ideas available anywhere. [→ mathematics; information-theory]