ZOOM encourages children to "turn off the TV and do it!" On the show, a cast of (usually) seven kids (known as ZOOMers) perform various activities such as games, plays, poems, recipes, jokes, and science experiments, all suggested by viewer contributions. The mail-in request became a pop culture reference for its music exhortation to "Write ZOOM, Z-Double-O-M, Box 3-5-0, Boston, Mass 0-2-1-3-4: send it to ZOOM!". (from wikipedia.org)