With only so much good farmland available worldwide, one of the challenges of feeding an expanding population is finding alternative ways to grow crops. Show your students one possible solution--a hydroponic "lettuce factory" that produces over 50,000 heads of lettuce every week.
Running time 2:24 minutes
Hands-On Math / Science Activity:
Subject: Algebra; Science
Topics: Variables; Biology (Plants)
Grades: 3 - 8
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Flash 9 or greater is required.