Construct & operate a functioning DC motor that demonstrates the uses of the armature, field coil, & commutator. Parts provided include: coil of copper wire, base, field poles, armature core, brushes, & all fasteners. Ages 10 and up. No tools needed for assembly except scissors. Comes complete with 12-page instruction booklet which includes illustrations, detailed assembly instructions, "How a Motor Works". 3-6 volt battery required for operation (not included).