Congruence Through Rigid Motions
Go from precise geometric definitions to proving triangles congruent with rigid motions, using only free resources.
Courses
A course is an optional curated path through the graph: a sequence of outcomes, the resources for each, and a project. The outcome is the unit of the curriculum; a course is one good route through several. Platforms such as DIY Degree can list a course as a source, or build their own paths from the same outcomes.
Data Literacy Foundations
Learn to read charts critically, clean a real dataset, and write up what it shows, with free tools and open data.