Supporting geography educators everywhere with current digital resources.



How Eratosthenes calculated the Earth’s circumference

“In the mid-20th century we began launching satellites into space that would help us determine the exact circumference of the Earth: 40,030 km. But over 2000 years earlier, a man in Ancient Greece came up with nearly the exact same figure using just a stick and his brain.”


Eratosthenes is often referred to as the “father of geography” for creating meridians and parallels on his maps to organize global information, classifying climatic zones, and as shown in the video, calculating the circumference of the Earth. Plus, he coined the terms so he gets the credit. If you have never pondered the meaning of the word “geometry,” the accomplishments of Eratosthenes will certainly show that the mathematical prowess was at the heart of expanding our collective geographic knowledge (additionally, here is a retro Carl Sagan in a video clip from Cosmos that inspired this clip).    


Tagsmapping, math, locationSTEM, historical.

Why do competitors open their stores next to one another?

“Why are all the gas stations, cafes and restaurants in one crowded spot? As two competitive cousins vie for ice-cream-selling domination on one small beach, discover how game theory and the Nash Equilibrium inform these retail hotspots.”


This TED-ED lesson shows the economic and spatial factors that lead to businesses to cluster together.  This video is a very simple introduction to the concept of agglomeration that is based on competition.


Tags: APHGTED, models, spatialK12, location.

The Language of Maps Kids Should Know

The vocabulary and concepts of maps kids should learn to enhance their map-skills & geography awareness. Concise definitions with clear illustrations.


I really like this article because it briefly shares the language needed for students to able to successfully use maps in the classroom…plus it’s highly adaptable for virtually any grade level.   

Tagsmapping, K12, scale, location.

Where is my Milk From?

Via Scoop.itGeography Education

Find out which dairy your milk comes from!

Too often we have heard the answer “from the grocery store!”  With more thought, the farm would be the next answer, but what kind of farm?  Which farm? Where is coming from?  All you need to arm your students to make the commodity chain more personal is the code on the carton and this link, and they are on their way to exploring the geography of industrial agriculture (more likely than not).  This site is designed to help consumer become more aware of the geography of diary production and to get to know where the products that we are putting in are body are coming from.  So, where does your milk come from?


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