Maths by Professor Norman Wildberger ()

Synopsis:
This channel aims to explain a lot of interesting mathematics to a broad audience, to introduce exciting new research directions for geometry, and to fix some of the logical weaknesses of modern pure mathematics.
You'll find playlists on Rational Trigonometry (much simpler, more powerful), Linear Algebra, Algebraic Topology, History of Mathematics, Universal Hyperbolic Geometry (a complete new treatment of this subject, a YouTube first!), the Foundations of Mathematics (it needs fixing) and even an elementary introduction to K-6 mathematics.

Thanks to the Author !!!

Elementary Mathematics (K-6) Explained
Universal Hyperbolic Geometry
Algebraic Topology
WildLinAlg
MathHistory: A course in the History of Mathematics
Algebraic Topology: Short clips
WildLinAlg
MathSeminars
MathFoundations
WildTrig

Elementary Mathematics (K-6) Explained
Universal Hyperbolic Geometry
Algebraic Topology
WildLinAlg
MathHistory: A course in the History of Mathematics
Algebraic Topology: Short clips
WildLinAlg
MathSeminars
MathFoundations
WildTrig