Can you build a machine that sorts two different sizes of marbles? How accurate can your marble machine be? Try this challenge to find out! Written instructions for this challenge and all the annual Science Buddies Engineering Challenges can be found at https://www.sciencebuddies.org/engineering-challenge?ytid=Bfw42Lf6ey4&ytsrc=description
Science Buddies also hosts a library of free instructions for over 1500 science projects, STEM activities, and lesson plans. Visit us at https://www.sciencebuddies.org/?ytid=Bfw42Lf6ey4&ytsrc=description
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