¿Como se hacía la música del cine mudo? https://youtu.be/8YEalSa5dp8
https://www.sutori.com/story/history-of-educational-technology–9CqC8orYUVkErDfYe25DFRcE
https://lukemckernan.com/2015/01/11/visual-education/
https://freefavour.wordpress.com/2009/05/14/the-new-technology-in-the-old-days/
https://www.theflippedclassroom.es/
https://educomunicacion.es/figuraspedagogia/0_ginerdelosrios.htm
https://corp.kaltura.com/wp-content/uploads/2018/07/The_State_of_Video_in_Education_2018-1.pdf