Curated OER
The Line Marker in the Observatory Courtyard
Examine how the prime meridian came to be, where it is located, and see actual pictures of the prime meridian.
Curated OER
The Clock
Examine how the prime meridian came to be, where it is located, and see actual pictures of the prime meridian.
Georgia Department of Education
Ga Virtual Learning: Astronomy: The Earth
In this interactive tutorial students will learn what causes the seasons, diurnal cycles and how the constellations move through the sky. Learn we are able to see other planets and how astronomical events affected life on the Earth.
Other
Boat Safe Kids
This is a delightful site about boats and boating. Lots of games plus a terrific overview of the history of navigation. Includes a visit to a reproduction of Columbus' Nina.
Wikimedia
Wikipedia: International Date Line
Wikipedia offers information on the International Date Line, an imaginery line that offsets the hours added as one travels east through time zones.
Diffen
Diffen: Latitude vs. Longitude
Find out about the basics of latitude and longitude with this comparison chart. Then read the article and watch the video to dig a little deeper into the topic.
Other
The Royal Observatory at Greenwich: Homepage
This site from The Royal Observatory at Greenwich is a very historically important astronomical observatory. The site has a combination of information about astronomy, longitude and time. Information written in highly accessible...
PBS
Pbs Nova Online: Lost at Sea the Search for Longitude
"The quest for a reliable method to find your way at sea was one of the thorniest problems of the 1700s." Find out about the search for longitude at this NOVA site. Includes interactive Shockwave game, learning activities and more.
Rice University
Rice University: Cynthia Lanius: Mathematics of Cartography: Coordinate System
A coordinate system such as latitude/longitude is an example of absolute location. Links to Greenwich/Prime Meridian.
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.
Wolfram Research
Wolfram Science World: International Date Line
This website provides a good general definition of the International Date Line.
City University of New York
Brooklyn College, Cuny: Latitude and Longitude
Students can read about how lines of latitude and longitude form a grid that makes it easy to pinpoint one's location on Earth. Then they can take an online quiz to check their understanding.
Curated OER
Etc: Maps Etc: Physical and Political Map of Africa, 1879
Map of pre-colonial Africa, showing the predominately native countries and territories of the African continent in 1879. The counties include the Barbary States of Morocco, Algeria, Tunis, Tripoli and Fezzan, the Egyptian territories of...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Maine, 1872
A map from 1872 of Maine showing the State capital of Augusta, counties and county seats, major cities, towns and ports, railroads, mountains, lakes, rivers, and coastal features. An inset map details the vicinity of Portland. Clock...
Curated OER
Etc: Maps Etc: Plan of the City of Washington, March 1792
A plan of the city of Washington from 1790. The lat/long figures on the map shows a longitude of 0 degrees 0 based on the Washington Prime Meridian passing through the Capitol. "This city was laid out by Peter Charles L'Enfant, who...
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