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Website
The Franklin Institute

Franklin Institute: The Science of Sound

For Students 3rd - 8th
This Franklin Institute webpage provides an introduction to understanding sound waves based on 5th grade science lessons.
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Unit Plan
CK-12 Foundation

Ck 12: Earth Science: Wind Waves

For Students 6th - 8th
[Free Registration/Login may be required to access all resource tools.] How winds form ocean waves.