Formalization
Formalization
Lean Bootcamp
Materials can be found at here. A recording of the second session is available as well:
The geometry game
A Lean Game to learn Hilbert geometry and formalization.
You can also try the older (and deprecated) Lean 3
game.
Formalització a la secundària
Talk "Ensenyant formalització a través de LEAN" (in Catalan).