The Story of Manganese, a puppet show investigating the properties and uses of the element Manganese (Mn).
VIDEO BY: Brittney Central Hight School
VIDEO BY: DavidRobertF.Kennedy
VIDEO BY: MarissaSaint Joseph's AcademyFinalist
VIDEO BY: SophieOwensville High School
VIDEO BY: elenaPoolesville High School
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Nylon valve, 1940s–1950s
©2010 Chemical Heritage Foundation