Science Please! : Operation Lever
Released
EN
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A clip in the Science Please! collection, Operation Lever uses archival footage, animated illustrations and amusing narration to explain how a lever increases force.
Canada
English
2021
1989
1997
2004
2005
2007
2014
1946
1952
1998
1931
2022
1982
2006
1959
1985
1969
1986
