This page provides favorite resources for teaching about Earth's magnetic field.
When you arrive at the National Science Teachers Association site (NSTA) www.scilinks.org, you will need to type in the code SFEM11 to reach their special resources for teaching about Earth's magnetic field. At the Log-in prompt, click the tiny black pull-down menu and select Guest, which will automatically enter a username and password. Next click the Submit button. When the input box appears, enter the SciLinks code of SFEM11. By the way, this is a fabulous site to explore and membership in NSTA is highly recommended so as to have access to additional resources.