NASA, Montana State University activity for grades 3-5 students is available online – "Signals and Noise, Oh Boy!"

A NASA activity developed by Montana State University http://www.montana.edu/ science educators for teachers is available free online.

"Signals and Noise, Oh Boy!" http://www.nasa.gov/audience/foreducators/topnav/materials/listbytype/Signals_and_Noise.html is about the NASA New Horizons mission to Pluto and helps students better understand how spacecraft communicate with Earth and how that communication is affected by all the background noise of objects in the universe.

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