CBS Anchor, Dana Tyler, emcees the 2011 Annual Opening Meeting kickoff for Learning Leaders Volunteers at Columbia University. Dana introduces children author, Greg Tang, who offers volunteer advices on making math fun for kids. Learning Leaders recruits, trains and supports up to 10,000 school volunteers who work with over 230,000 students — over one-fifth of the New York City public school population — in 450 schools throughout the five boroughs.