TeachEngineering
Teach Engineering: It's About Time
In past times, ocean navigators tossed a piece of wood over the side of their ships and noted how long until the ship passed the wood. They used this time measurement and the length of the ship to calculate their speed and estimate how...
TeachEngineering
Teach Engineering: Navigating at the Speed of Satellites
For thousands of years, navigators have looked to the sky for direction. Today, celestial navigation has simply switched from using natural objects to human-created satellites. A constellation of satellites, called the Global Positioning...
Curated OER
Wikipedia: Geocaching
A clear explanation of geocaching, including its history, variations of the activity, a list of terms used in geocaching, and guidelines, rules, and considerations for those interested in pursuing this activity. This thorough site also...