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I'm putting together a simple "try-it" for 9-12 year olds to model how  
"lateral lines" (sensory organs on sharks, trout and other water critters) sense  
vibrations.  I was thinking about the usual activities (sugar dancing on a  
drum surface when vibrations from a loud noise hits it; plucking a slinky,  
etc.).  But maybe someone out there has a better idea?
 
Thanks,
 
Lisa

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