Pamela Seed
The Art and Science of Fifteenth Century Navigation: Latitude
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.
New York Times
New York Times: Crossword Puzzle: Latitude & Longitude
Here is an interactive & printable crossword puzzle developed by the New York Times Learning Network. The theme of this puzzle is Latitude & Longitude.
Other
Boat Safe Kids: Longitude and Latitude
This website starts at the very beginning and explains how round globes are transferred to flat maps. Then they explain the use of longitude and latitude.