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Check out NASA's Wavelength, an amazing STEM resource from NASA and share it with your science, math, technology and if you have them engineering teachers. What a treasure trove of topics searchable by age level.

 
 
Share this NPR feature by Robert Kruwich which includes information and a video demonstrating a most clever device designed by a team at Harvard.  Young and old alike will marvel at it and hopefully some may feel challenged to figure out just how it works!! Be sure to check out the link in the article to OTHER great little videos of Newtonian wonders.                 Katie