Students add weights until the party popper initiates. Note the reaction of
the student in the middle of the photograph, who is a pre-service science teacher.
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Last Modified: 2013-07-31 15:22:37
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July 2013 http://nagt.org/nagt/publications/trenches/issues/jul13.html
Provenance Chris King, Peter Kennett and El izabeth Devon, Earthlearningidea Team, Earth Science
Education Unit, Keele University
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