Conversione di Velocita'

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2xf/ Esercizi: http://www.khanacademy.org/exercises?exid=units Traduzione in Italiano del video Speed translation http://www.youtube.com/watch?v=aTjNDKlz8G4 http://www.khanacademy.org/video/speed-translation?playlist=Pre-algebra Help us caption & translate this video! http://amara.org/v/B2xf/