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"Crystal Radio: A Science Kit for Student Electronics": Build a crystal radio and then tune in an AM radio station--without batteries. An improved crystal radio kit and an updated procedure makes this a great choice for an assigned #science project or just for hands-on #electronics fun! [Source: Science Buddies, http://www.sciencebuddies.org/blog/2014/03/crystal-radio-a-science-kit-for-student-electronics.php?from=Pinterest] #STEM #scienceproject #crystalradio