Physical Sciences K-8: Magnetism and Magnetic Force Units
Magnetic fields can be defined as the regions surrounding a magnet where a moving electric charge will feel a force of attraction or repulsion. Invisible magnetic field lines emerge from the North pole of a magnet and enter the South pole. Field lines can be visualized by sprinkling small iron filings over a magnet covered by a clear sheet of plastic. When a compass (or any freely floating bar magnet) points north, it is actually aligning its north pole to the Earth's magnetic south pole.
This resource is a student tutorial on magnetism appropriate for middle school or 9th grade Physical Science. It is organized into sequenced headings that each contain interactive simulations and reflective questions. The first half of the tutorial gives students a conceptual framework to understand properties of magnets and magnetic behavior. The topics then broaden to include magnetic lines of force, magnetic field, electromagnets, electric motors, and galvanometers.