Magnets and Electromagnets Hands-on science and math activities for middle school students. education.jlab.org/beamsactivity/6thgrade/m...
Making Matter: Magnets An electric current generates a magnetic field, and unpaired electrons spinning on atoms act as small electro-magnets pointing in particular directions ie they have a "north" and a "south" pole.. ill.fr/dif/3D-crystals/magnets.html