This web site contains a mathematics project, called \u201cEDB\u201d. This presents mathematical exercises for first year students, that I collected in a decade of teaching. It is published at the address https://coldoc.sns.it/CD/EDB
EDB contains elements of theory, roughly 1000 exercises and 600 solutions.
EDB implements a simple game to engage students. Theory and exercises are public, whereas solutions are reserved. But solutions may be bought: each student has an allowance of eulercoins to buy solutions; a student may also earn more eulercoins by writing the solution to an exercise and sending it to me
