Matematica
https://www.youtube.com/watch?v=K_R7325RArQ
Scienze
https://coneixelriu.museudelter.cat/en/riverside-plant-life.php
https://coneixelriu.museudelter.cat/en/birds.php
https://www.la7.it/eden/video/gli-animali-che-abitano-le-nostre-alpi-24-02-2020-309286