The article presents inexpensive activities to teach elementary school students about electromagnets. Students learn to make an electromagnet with a battery, nail, and wire, then different activities help them explore the difference between permanent magnets and electromagnets. (SM)

Describes the assembly of a simple loudspeaker that can be used to generate high fidelity sound when plugged into a boom-box speaker output. (WRM)

Compares various detector technology for measuring the direction and magnitude of magnetic fields. (CCM)

A science toy sometimes called the "magnetic spinner" is an interesting class demonstration to illustrate the principles of magnetic levitation. It can also be used to demonstrate Faraday's law and a horizontally suspended physical pendulum. The levitated part contains two circular magnets encased in a plastic housing. Each magnet stays…

Describes a number of simple experiments and demonstrations useful in secondary school science teaching. (AL)

Discusses the properties of neodymium magnets and magnets in general and how magnets can be used to teach students important scientific principles, such as attraction, repulsion, and polarity; the role of magnetic forces in electronic communications and computers; the magnetic properties of the earth and compasses; and the relationship between…

Describes a fast and simple method for measuring the magnetic force acting on a current-carrying conductor using a digital balance. Discusses the influence of current intensity and wire length on the magnetic force on the conductor. (JRH)

Describes a sequence of activities which explore the nature of magnetism. Presents background information and details for classroom instruction for the following activities: plotting two-dimensional magnetic fields, making the reed switch and the reed relay, building a ribbon and moving coil loudspeaker, and investigations of a toy commutatorless…

The unit presented in this teacher's guide is one of two developed for the sixth and final year in the Science Curriculum Improvement Study (SCIS) curriculum. The concept of a scientific model is introduced in this unit with activities directed toward increasing student understanding of electric and magnetic phenomena through concrete experience…

Describes a procedure to demonstrate the effect of a magnetic force on a moving charge. The materials used are inexpensive and with the use of an overhead projector, easily visible to an entire class. (CP)

Discusses activities with magnets and magnetism for elementary students. (SL)

Presented are two science demonstration projects: (1) the simulation of a magnetic survey utilizing a bar magnet buried in a sand box and (2) an investigation of the reaction between lead nitrate and sodium hydroxide. (SL)