Online Learning Haven
Finding Your Way: How to Read a Compass
A great explanation on what a compass is and how to read one. After the explanation, a step-by-step guide to drawing your own compass is given.
Other
Learn Orienteering: How to Use a Compass
This site is an easy-to-follow guide on how to use a compass.
National Council of Teachers of Mathematics
Nctm: Figure This: Airport Runways
Why are airport runways numbered? The math challenge is to figure out the missing runway number.