The Best Pauls Online Math Notes Alternatives in 2026

3Blue1Brown explains mathematics through visual lessons on linear algebra, calculus, neural networks, topology and other topics.

Video-Tutor lists instructional videos on algebra, trigonometry, precalculus, calculus, chemistry, and physics.

Mathplanet provides free high-school courses in pre-algebra, Algebra 1, Algebra 2 and geometry.

Stitz-Zeager provides free, open precalculus materials covering college algebra, trigonometry, and precalculus.

Mathcha provides an online editor for text, equations, math symbols, graphs and diagrams.

Math Portal provides step-by-step calculators and solvers for equations, expressions, matrices and complex numbers.

Coolmath offers free online math lessons, games and activities, including algebra and precalculus topics.

Calculus Made Easy presents Silvanus P. Thompson's calculus text and explanations for learning calculus.

SchoolYourself offers interactive online math videos, lessons, and tutoring, with blog and account links.

Wolfram Alpha computes answers across math, science, history, geography, engineering, finance and other subjects using its knowledge base.

Linear Algebra Done Right provides the text and resources for Sheldon Axler's fourth edition on linear algebra.

Algebra Rules explains basic algebra rules with examples and explanations.

LibreTexts Mathematics provides curated textbook materials that readers can use directly or adapt into customized remixes.

Stat Trek offers free tutorials and tools for statistics, probability, and survey analysis.

Wolfram MathWorld contains more than 13,000 illustrated mathematics entries with interactive examples.

Project Euler offers mathematical and computational problems for users to solve and learn from.

A mathematics study plan organizes core subjects and offers guidance on how to study them, from precalculus onward.

Cut the Knot offers interactive mathematics puzzles and educational material.

nLab is a collaborative online resource for mathematics and physics, with pages and recent revisions.

MadAsMaths maintains a mathematics resource archive for learners and teachers looking for study material.

Mathigon offers interactive mathematics learning resources through its online mathematical playground.

Smartschool provides an AI math tutor for K-12 students to use during practice.

OSSU Math lays out a complete self-taught mathematics curriculum using online learning materials.

This repository explains popular machine learning algorithms with MATLAB and Octave code examples and mathematics.