Weird educational videos 7 julio, 2013 por Felipe Sahagún | 0 Comentarios Mashable ✔ @mashable 15 Of the Weirdest Educational Videos On @YouTube http://on.mash.to/12ulgwq 2:30 AM – 7 Jul 2013 Duck and Cover 1951 Civil Defense Film with Bert the Turtle (Published on Nov 7, 2009) Entradas relacionadas: How did Kevin Spacey become an actor Changes in Media over the Past 550 years Debt and defense Is technology changing our lives? Don’t miss these great videos