This video explains how electromagnets work. Electromagnet science project instructions: http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_p035/electricity-electronics/strength-of-an-electromagnet.shtml
Science Buddies also hosts a library of over 1,200 other free science fair "Project Ideas" for K-12 students, in a wide variety of topic areas from Astronomy to Zoology! Visit us at http://www.sciencebuddies.org to see more Project Ideas for hands-on science and engineering.
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