Math concepts explained with videos

Understand math concepts with videos that show how an idea works, and readable notes that help you revisit it. These math videos with notes connect definitions, worked examples, learning maps and knowledge graphs. Move from a question to a concept, then jump to the moment that explains it. Start with something familiar and follow a nearby idea when you need another perspective.

In calculus, limits describe what happens near a point. Derivatives make that local behavior useful for understanding rates of change, while integrals describe accumulation across an interval. Explore these concepts together to see how a graph, a formula and a worked problem express the same mathematical idea. The calculus learning map provides an order for connecting definitions with applications.

Linear algebra starts with vectors and develops a language for transformations. Matrices organize those transformations and the calculations behind linear systems. Eigenvalues reveal directions whose behavior is especially simple. Comparing geometric explanations with algebraic examples can help you understand what a calculation means, rather than treating its steps as a recipe.

Probability adds a different question: what changes when new information arrives? Conditional probability describes a probability under a stated condition, and Bayes’ theorem connects that condition with updated beliefs. Each concept page brings together its definition, reviewed questions and answers, related concepts and available video explanations. Use the concept index to find another starting point, or browse the video directory when you already know the topic, teaching style or length you want.