Math
3D Math Primer for Graphics and Game Development
The book focus on cover fundamental 3D math concepts for beginners
Math For Game Devs (2020)
Four part lecture on essential math for game developers by Freya Holmér
Barycentric Coordinates
An interactive introduction to barycentric coordinates. It starts with linear-interpolation and generalize it to triangles and higher-dimensions.
Gimbal lock confusion
A stackoverflow answer on why the Gimbal lock occurs
Immersive Linear Algebra
Free online linear algebra book with fully interactive figures
Visualizing quaternions by 3blue1brown
A great intereactive introduction/refresher for quaternions. It focuses on intuition rather than mathematical definitions
Foundations of Game Engine Development, Volume 1: Mathematics 1st Edition
Introduces math routines with implementations. It also touches Grassman algebra
Mathematics for Computer Graphics
comprehensive range of mathematical techniques and problem-solving strategies associated with computer graphics