These sites, often hosted on github.io (a free hosting platform), are used to host browser-based games or calculators, such as GeoGebra variations, Desmos-like graphing tools, or math-based logic games [1].
The platform is known for hosting "web ports" of games that are typically unavailable on standard browser sites. Some of the most popular titles include: gnmath github io unblocked
Some schools have explicit policies against “unblocked” sites because they imply circumvention. In those cases, use the offline method and ask for retroactive permission. Most math teachers want you to understand, not to suffer. These sites, often hosted on github