Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2x8/ Esercizi: http://www.khanacademy.org/exercises?exid=exponents_3 Traduzione in Italiano del video Level 3 exponents http://www.youtube.com/watch?v=aYE26a5E1iU http://www.khanacademy.org/video/level-3-exponents?playlist=Pre-algebra Help us caption & translate this video! http://amara.org/v/B2x8/