Employees of The Huffington Post Media Group and AOL will be helping throughout their local communities, from preparing food for families and individuals in need at the LA Food Bank to dancing with elderly residents of nursing homes in New York City, a volunteering opportunity offered by New York Cares, New York City's largest volunteer organization and AOL's New York partner for the initiative. The 30-Day Service Challenge is a lead-up to AOL's "Monster Help Day" on May 20th, the company's second annual employee-wide focused day of service. Arianna Huffington and Tim Armstrong will today be teaching a class to New York City school children at Urban Academy of Arts and Letters in Brooklyn, as part of a Citizen Schools program encouraging professionals to team up with public schools to create an enhanced learning community after the school day ends.