Where Is Here?
In this lesson, students are shown the very basics of navigation. The concepts of relative and absolute location, latitude, longitude and cardinal directions are discussed, as well as the use and principles of a map and compass.
Location can be determined using a compass and map.Copyright Wikimedia Commons http://upload.wikimedia.org/wikipedia/commons/d/d5/Stanley_compass_1.jpg
Some engineers create sophisticated guidance systems. For example, the MapQuest.com website provides detailed maps and directions that were created by computer algorithms and software designed by engineers. Another technology is OnStar — a system installed in vehicles to provide information and services such as stolen vehicle tracking and roadside assistance. The system uses GPS satellite and cellular technology to link the vehicle and driver to a help center. In fact, in recent years, mapping websites like MapQuest and external GPS systems like OnStar have been almost entirely replaced by GPS technology built into smartphones!
After this lesson, students should be able to:
- Explain the concepts of coordinates and cardinal directions.
- Explain the importance of using a common set of symbols and methods when making maps.
- Describe how using and understanding maps and compasses can help determine one's location.
- Explain how navigational technology like global positioning system (GPS) is used in many areas of engineering.
- Describe latitudinal and longitudinal numbers and how to measure distance using those numbers.