Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2xW/ Esercizi: http://www.khanacademy.org/exercises?exid=equivalent_fractions http://www.khanacademy.org/exercises?exid=equivalent_fractions_2 Traduzione in Italiano del video Equivalent fractions http://www.youtube.com/watch?v=U2ovEuEUxXQ http://www.khanacademy.org/video/equivalent-fractions?playlist=Arithmetic Help us caption & translate this video! http://amara.org/v/B2xW/