geographylessons.github.io is part of a growing movement where educators bypass traditional publishing and centralized platforms by using (like Jekyll, Hugo, or plain HTML/CSS) on GitHub. This approach offers version control, open collaboration via pull requests, and zero hosting costs. Other examples include Physics for Future Presidents , OSSU (Open Source Society University) computer science curriculum, and The Programming Historian .
Each lesson typically follows a predictable, learner-friendly pattern: a short objective statement, key vocabulary, explanatory text with simple diagrams, interactive (click-to-reveal) questions, and a self-check quiz with answers provided.