MathPlot
MathPlot is a creative-mode mod that provides tools for constructing mathematical curves/surfaces/solids. It is built with the intention of being used as an educational device in a multivariable / vector calculus course.
Documentation
See the project wiki for setup instructions, documentation of the mod's features, and example usage.
Information about the author's use of Minetest in educational environments is available in a preprint for a submitted publication and on his academic website.