The file is referred to in 1 page
- Build a Better Wall
https://serc.carleton.edu/ANGLE/educational_materials/activities/205638.html
Provenance
FEMA (Federal Emergency Management Administration); worksheet by Chris Hedeen (Oregon City High School)
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http://creativecommons.org/licenses/by-nc-sa/3.0/ You may reuse this item for non-commercial purposes as long as you provide attribution and offer any derivative works under a similar license.
