https://www.betterinternetforkids.eu/web/portal/
https://planetnutshell.com/netsafe/
IMÁGENES LIBRES DE DERECHOS
https://www9.lunapic.com/editor/?action=set-size
https://pinetools.com/censor-photo-blur-pixelate
https://www.europeana.eu/portal/bg/collections/photography
https://www.edupics.com/
https://www.pexels.com/
http://pics4learning.com/
https://photosforclass.com/
MÚSICA Y SONIDOS LIBRES DE DERECHOS
https://www.malbertsmelodier.se/en/start
https://freesound.org/
https://www.musicradar.com/news/tech
https://freemusicarchive.org/