Conservation+exercise

=Resource: Alternate introductory exercise= This is something I am playing with to explicitly introduce concepts including:
 * system, environment
 * internal, external
 * constant, conserved
 * bar charts

Type of resource
Worksheet handouts

Applies to lesson(s) or activities
Introductory lesson

Comments of submitter
This is an improved and expanded version of the "money conservation" bar charts activity that starts the module

Discussion
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