I am João Sarubbi, a Full Professor of Computer Science at CEFET-MG in Brazil, where I teach Operations Research, Discrete Mathematics and Graph Theory. Over the past few years, I have been developing a collection of visual teaching resources on YouTube to support students in these areas. The channel is available here: https://www.youtube.com/@joaosarubbi One of the motivations behind the project came from something I frequently observe in the classroom. In Operations Research, students may learn how to perform calculations or reproduce the steps of an algorithm before they fully understand the structure of the problem they are solving. They may know what to do next while still having difficulty seeing the modelling decisions, the relationships between variables and constraints, or the reasoning behind each step. For this reason, I have tried to combine mathematical explanation with visualisation, animations, worked examples and exercises. Rather than presenting only the mech...