I teach algorithms. The hardest part isn't the math — it's getting students to build intuition for how an algorithm behaves. You can explain red-black tree rotations on a whiteboard, but until someone sees the tree restructure itself in real time, it stays abstract.

So I built 34 interactive algorithm visualizations. In two weeks. Each one is a self-contained HTML file with no dependencies. Dark theme, consistent controls, runs in any browser. The project is visual-cs.