The Metric Marvels (Lost 1978 Children's Animated Series)

The Metric Marvels is a series of seven animated educational shorts featuring songs about meters, liters, Celsius, and grams, designed to teach American children how to use the metric system. They were produced by Newall & Yohe, the same advertising agency which produced ABC's Schoolhouse Rock! series, and first aired on the NBC television network in September 1978. Voices for the Metric Marvels shorts included Lynn Ahrens, Bob Dorough, Bob Kaliban, and Paul Winchell.

Although it shared the animation style, song quality and voice actors of the more popular Schoolhouse Rock!, the series had far fewer episodes and was relatively short-lived. (Being shown on another network from Schoolhouse Rock!, and not having the benefit of airing within the context of that series in rotation, also hurt the series. Short-form animated clips such as these were typically ABC's specialty, and NBC did not air such programs other than The Metric Marvels.)

Ultimately, The Metric Marvels (along with all other U.S. efforts) failed to convince Americans to convert to the metric system. Americans largely ignored governmental attempts to push them in the direction of metrication and the USMB was eventually disbanded in 1982.

All that has surfaced of the show online is the intro in black-and-white. No full episodes have surfaced online, as they are believed to be lost. As stated above, there are seven shorts in the series total:
 * 1) "Meet Meter Man" / Superhero Meter Man helps people convert length and distance to metric terms
 * 2) "Mara-Mara-Marathon" / The difference between miles and kilometers
 * 3) "I'm Your Liter Leader" / Superhero Liter Leader explains the difference between gallons and liters
 * 4) "Eeny, Meeny, Miney Milliliters" / Liter Leader uses recipes to explain milliliters
 * 5) "Super Celsius" / Superhero Super Celsius explains the Celsius temperature scale
 * 6) "Wonder Gram" / Superhero Wonder Gram expresses her weight in grams
 * 7) "Wonder Baby" / A young Wonder Gram converts pounds to kilograms