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Curated OER
Feel the Vibrations
How does sound travel in a string walkie-talkie? Third graders read about the way vibrations act between two cups and a string. Next, they put the steps in order, and experiment with their own walkie-talkies.
Curated OER
Can You Hear a Tree Fall in Space?
How does sound travel in space? Fifth graders investigate this question with a science activity, in which they research the properties of sound. Schedule a lab visit for individual Internet research, or include the activity after you...