In geography, size matters. On maps, large always wins over small.
We're human. We're wired to quickly spot patterns and make visual
comparisons. See
Tufte, Edward.
Picture
a map of your own state. How does it compare in size to the states
next door, the largest states, the smallest, or Texas?
I recently joined with map-minded folks to build
GeoTron 5000 to put the power of comparative geography and spatial literacy in hand. Choose two places and the
GeoTron 5000 robot spins up two maps to show exactly how those places compare.
So what's going on behind the scenes in GeoTron 5000 to enable these mappy comparisons?
GeoTron 5000 houses an international map library based primarily on
Natural Earth, a fantastic public domain vector dataset. The Natural Earth maps were pre-processed using
Quantum GIS
geographic information systems software to present consistent
comparisons of land area from California to Kyrgyzstan. International
country lists and official land areas were harvested from the
United Nations Statistics Division via their
World Statistics Pocketbook and
Demographic Yearbook. Domestic datasets are from the
US Census.
GeoTron 5000 is free at the
Apple App Store
and includes all 50 US States and the District of Columbia. Additional
geographies outside the USA are available for comparison via in-app
purchase. The app requires no cell service, no internet connection, and
no international data plan when traveling.
Travel is one of the
best tests of our spatial literacy. When away from familiar territory
we can use the size of places we know well to better understand places
we've never visited. Travel guide books assume a high degree of spatial
literacy when offering comparisons like "Germany is about half the size
of Texas". But spatial thinking is best served when we choose familiar
frames of reference. For example, to understand the relative size of
China's Great Wall,
HowBigReally.com displays the massive wall scaled and centered over any location, here Charlottesville, Virginia:
Visualizing comparative size and shape requires skill in
spatial thinking.
Packing a suitcase, parking a car, finding a restaurant, finding your
car when leaving the restaurant...all involve visualizing spatial
relationships based on size, distance, shape, and changing points of
reference. Artsy
infographics overlay the world on Africa and
popular television explores Mercator's map distortions. We're all
thinking spatially every day.
"Spatial
literacy is the competent and confident use of maps, mapping, and
spatial thinking to address ideas, situations, and problems within daily
life, society, and the world around us." - Diana Stuart Sinton, Geographer and Spatial Thinker
Universities host spatial studies
centers, organize spatial studies
conferences, and offer graduate level
training in spatial literacy. And
spatial literacy is a topic of growing academic focus
beyond the higher ed classroom. Kids love maps. Using maps to illustrate comparative size promotes
spatial thinking at an early age.
"Spatial thinking can be learned, and it can and should be taught at all levels in the education system." - National Research Council
Much of
Edward Tufte's brilliant work on visual literacy is centered around maps. In
Envisioning Information he writes of maps:
"No other method for the display of statistical information is so powerful."
Scaled maps for geographic comparison using
How Big Really or
GeoTron 5000 inform spatial reasoning by answering the key question: compared to what?
Size matters.
[Cross-posted with scholarslab.org]