This site from NASA provides definitions of latitude and longitude with good graphics.

Explore navigation methods by sea, air, and space, what latitude and longitude mean, how GPS works, about satellite navigation, and learn about professional navigators. Includes a timeline of developments in navigation from 1280 to the...

Chronicle of the changes that occurred in various areas when latitude was identified in 1516. Site includes links to the changes in maps, compass roses, and the science of sailing.

Detailed geographical information on any country is available at this site. Within the World Map section, you can get facts and figures about each country's geography, demographics, government, political system, flags, historical and...

Great slideshow to learn about latitude and longitude. There are many great discussion questions as well as maps to enhance your learning.

Looking for enrichment? Here's an online treasure hunt requiring skill with directions, distance, contour maps, latitude, and longitude. Also supplementing the activity are interactive quizzes on latitude, longitude, and other related...

Teachers who are looking for a complete course study in physical geography need this site. It is very well organized and colorfully designed. It contains an online glossary, study guides, links, clip art, maps etc.

Features downloadable World Political and Physical Maps that include country names, country borders, ocean features, island names, and lat/long graticules. Clicking on any part of the map enlarges it.