The perfect magnet set for schools on a tight budget. Perform numerous demonstrations using a ring, bar, or horseshoe magnet to present the important properties of magnetism to your students. Show that some metals are magnetic, while most metals are not. Demonstrate why a compass points north. Use the iron filings, provided, to reveal the invisible magnetic field lines surrounding the magnets and illustrate the magnetic strengths of different magnets. Kit includes a 26-page activity manual to guide you through the demonstrations. This set of magnets is a real bargain.