This kit includes a special cow magnet and an illustrated activity book. The magnet is a special version of an actual cow magnet, which is used to prevent Hardware Disease in cows. The cow magnet disassembles into 16 pieces (including five powerful ceramic ring magnets) for use with activities in the 16-page booklet that can be used as a lesson plan. The booklet features Bessie Bovine who guides youngsters through 12 exercises that teach them the principles of modern magnetism.