In this interactive tutorial students will explore magnetic force. Students will observe interactions of magnets and study magnetic fields. The source of magnetic properties is believed to be moving charge. Since moving charge produces...

Learn what magnetic fields are and how to calculate them with this reference page.

An electromagnetic simulation which replicates moving charged particles in two identical magnetic fields separated by a zero magnetic field gap.

A bar magnet model built by placing a group of magnetic dipoles along the magnet. This simulation shows the magnetic field of a bar magnet, and has a movable compass which shows the magnetic field values.

A unit all about magnets! Explore magnetic forces, types of magnets, and more through these informative activities.

[Free Registration/Login may be required to access all resource tools.] The Earth's magnetic field and how it protects life on Earth, and how it is used for navigation.

[Free Registration/Login may be required to access all resource tools.] Examines Earth's magnetic field.

A module that uses pictures, videos, reading passages, and review question to go over what a magnet and magnetic pole are, and how magnetic force is related to magnetic field. This site may require free registration to access all...

[Free Registration/Login may be required to access all resource tools.] Examines Earth's magnetic field.

You can use a bar magnet and a compass to get a rough idea of the strength of Earth's magnetic field. Read this article to find out how!

See drawing from Hans Christian Orsted's lab notebook showing an experiment in which an electric charge passing through a wire seemed to create a magnetic field!

A simulation which shows the field of a magnetic dipole or quadrupole using compass needles indicating direction and relative field strength. Change the angular orientation of the dipole, and a movable compass shows the magnetic field...

Explore what an electric field is and how electric fields interact with this module. Module includes a video, interactive activity, and review questions.

In this interactive tutorial students will explore how a magnetic field affects a current-carrying wire and also how two current-carrying wires affect each other. They will learn about Biot-Savart, Ampere's Law and the magnetic field...

In this interactive unit students will see how magnets work and how they are used in some of the most useful and common devices today.

[Free Registration/Login may be required to access all resource tools.] Why the Earth is a magnet and how its inner structure relates to its magnetic field.

Students are introduced to a unique fluid--ferrofluids--the shape of which can be influenced by magnetic fields. This activity supplements traditional magnetism activities and offers comparisons between large-scale materials and...

[Free Registration/Login may be required to access all resource tools.] What a solenoid is and how to change the strength of its magnetic field, and some uses of solenoids.

In this classroom activity, the students will investigate the magnetic pull of a bar magnet at varying distances with the use of paper clips. Students will hypothesize, conduct the experiment, collect the data, and draw conclusions that...

[Free Registration/Login may be required to access all resource tools.] Explains how Earth is a magnet, its geographic and magnetic poles, and its magnetic field.

In this interactive learning module, students learn about the basic properties of magnetism. Practice problems are provided for ongoing assessment.

Step-by-step illustrated instructions show how to build a simple electric motor using everyday materials to make a wire coil spin. An explanation of the science involved is given at the end, as well as tips on troubleshooting any...

An article defining what magnetic force is and how to calculate it.

In this fun, engaging activity, students are introduced to a unique type of fluid--ferrofluids--whose shape can be influenced by magnetic fields! Students act as materials engineers and create their own ferrofluids. They are challenged...