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Science, technology, engineering and math in K-12
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Map Projections

Map Projections | STEM Connections | Scoop.it

A map projection is used to portray all or part of the round Earth on a flat surface. This cannot be done without some distortion.  Every projection has its own set of advantages and disadvantages. There is no "best" projection.  The mapmaker must select the one best suited to the needs, reducing distortion of the most important features.  Mapmakers and mathematicians have devised almost limitless ways to project the image of the globe onto paper. Scientists at the U. S. Geological Survey have designed projections for their specific needs—such as the Space Oblique Mercator, which allows mapping from satellites with little or no distortion.  This document gives the key properties, characteristics, and preferred uses of many historically important projections and of those frequently used by mapmakers today.


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Carlee Allen's curator insight, March 26, 2015 6:58 PM

This article explains and talks about 18 specific map projections. It gives a lot of detail about all of them, and describes the disadvantages and uses for all of them.

 

I thought that this was interesting because I learned more about map projections, and actually how people use them.

Ruth Reynolds's curator insight, March 27, 2015 2:05 AM

This is so useful for primary students

Christopher L. Story's curator insight, March 27, 2015 9:59 AM

Some review help

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EnviroAtlas

EnviroAtlas | STEM Connections | Scoop.it

EnviroAtlas is a collection of interactive tools and resources that allows users to explore the many benefits people receive from nature, often referred to as ecosystem services. Key components of EnviroAtlas include the following:

A multi-scaled Interactive Map with broad scale data for the lower 48 states and fine scale data for selected communitiesThe Eco-Health Relationship Browser, which shows the linkages between ecosystems, the services they provide, and human healthEcosystem services information, GIS and analysis tools, and written resources


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steve smith's curator insight, May 23, 2014 3:59 PM

This looks great, will be having a play with this soon !

Mirta Liliana Filgueira's curator insight, May 24, 2014 3:38 PM

Enviro Atlas. Mapa Interactivo.

Allan Tsuda's curator insight, May 25, 2014 9:21 PM

Unbelievable, tremendous resource. I wish I had this one growing up. It is a US gov site (EPA), and is for US geography. I'm betting you can search around for similar sites for other locales around the world. Great demo. Demo runs on Adobe Captivate. The demo took a little bit of time to load on a wired connection through a high speed fiber optic connection. Or skip the demo and play around with the maps. Site not all that fast. Still, it's worth waiting for if you want the data.

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Logging and Mudslides

Logging and Mudslides | STEM Connections | Scoop.it
In recent decades the state allowed logging — with restrictions — on the plateau above the Snohomish County hillside that collapsed in last weekend’s deadly mudslide.

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Geofreak's curator insight, April 3, 2014 1:39 PM

Mijnbouw en aardverschuivingen, een goede combinatie ...... 

PIRatE Lab's curator insight, April 7, 2014 11:48 AM

There are several reasons for mudslides--some are purely a result of physical geography and others are related to land use patterns.  This last week's mudslide in Washington state was a combination of the two and although this impacts one place (see on map), it is a good teaching moment to discuss the environmental impacts of land use patterns and resource extraction projects.  As seen in this interactive, the river was cutting at the base of the hill, while loggers were clear-cutting at the top of the mountain.  Trees help prevent erosion as the roots hold the soil in place--a critical piece to the puzzle in a very rainy climate.  With $1 million worth of timber on the slope, logging companies persisted despite objections from the Department of Natural Resources and some restrictions (but in hindsight, those restrictions clearly were not enough). 

 

View the impact in ArcGIS online: Before and After Swipe, LiDAR I and II, and Imagery.

 

Questions to Consider: Other than economic worth, what other ways are there to value and evaluate the environment?  How could this landscape have been protected and managed better or was this mudslide inevitable?   

El Futuro deWaukesha's curator insight, April 18, 2014 12:03 AM

Working on an Inquiry of recent natural disasters with first grader.  

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Great Circle Mapper

Great Circle Mapper | STEM Connections | Scoop.it

"The Great Circle Mapper displays maps and computes distances along a geodesic path. It includes an extensive, searchable database of airports and other locations."


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YEC Geo's curator insight, January 15, 2014 8:31 AM

Cool tool.

matthias brendler's curator insight, January 16, 2014 10:34 AM

Maps Monster am I!

Jessica Rieman's curator insight, January 28, 2014 12:59 PM

Because this route from JFK Airport to SYD AUS Airport is not a straight route there are many factors that need to be taken in account because of the overwhelming idea of trade winds and how that affects flight plans and routing for different airways/airlanes.  The plane has to fight against the trafe winds in order to create a specific ETA for the passenger and the flight crue among the plane. This is all dependent upon the trade winds (prevailing and other kinds) transmitting against the plane.

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3 Ways to Make Compelling Maps

3 Ways to Make Compelling Maps | STEM Connections | Scoop.it

"What makes a good map?  How can we tell what makes a good map?


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SchoolandUniversity's curator insight, June 1, 2013 1:45 AM

http://bit.ly/11hvYJo

 

Leoncio Lopez-Ocon's curator insight, June 1, 2013 7:08 AM

Maneras de hacer a los mapas más expresivos y convincentes

Jye Watson's curator insight, June 23, 2013 10:24 PM

Mapping tips

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What is GIS?

This is a brief introduction to what geographic information systems are.  This is not a tutorial on how to use it, but a conceptual overview on the potential uses and applications for GIS.  

 

Tags: GIS, video, Unit 1 GeoPrinciples, geospatial, mapping and location.


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CT Blake's curator insight, September 28, 2014 10:55 AM

Useful for understanding the use of GIS and differences with GPS.

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How One Woman's Discovery Shook the Foundations of Geology

How One Woman's Discovery Shook the Foundations of Geology | STEM Connections | Scoop.it
Without ever setting sail, Marie Tharp mapped the ocean floor and made a discovery that shook the foundations of geology. So why did the giants of her field dismiss her findings as “girl talk"?

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Prof. Hankell's curator insight, December 19, 2014 9:27 AM

Marie Tharp v Experts...

Marianne Naughton's curator insight, December 20, 2014 11:32 AM

Marie's Ocean Discoveries ...  

Allan Tsuda's curator insight, December 21, 2014 7:12 PM

Not EdTech but great story. Embarrased I had never heard of Marie Tharp until now.

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The Science behind Google Earth

The Science behind Google Earth | STEM Connections | Scoop.it

"Google is using a new technology to automatically generate  3D buildings from 45-degree angle aerial photography made by overlapping passes of aircraft.  The aerial photos are combined to create 3D models."


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Annenkov's curator insight, April 16, 2014 12:46 AM

This technology of visualization I would name "3D landscape"

Mirta Liliana Filgueira's curator insight, April 16, 2014 8:40 PM

Tecnología para generar imágenes en 3D con Google Earth

Sid McIntyre-DeLaMelena's curator insight, May 29, 2014 2:06 PM

Google Earth has made the Earth easier to decipher and examine in a geographical sense of location and place by being able to see multiple layers. This article goes into the 3D designs and usage of aerial photography to create 3D images.

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Atlas of the Historical Geography of the United States

Atlas of the Historical Geography of the United States | STEM Connections | Scoop.it

"The Digital Scholarship Lab at the University of Richmond has created an enhanced version of the Atlas of the Historical Geography of the United States, which was published in 1932. The atlas, which took dozens of researchers to assemble, used maps to illustrate a variety of political, demographic and economic concepts."


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Claudia Patricia Parra's curator insight, January 17, 2014 9:37 AM

Muy buen material!

Mirta Liliana Filgueira's curator insight, January 21, 2014 11:24 AM

Atlas de la geografíia histórica de Estados Unidos.

Jess Deady's curator insight, April 16, 2014 1:33 PM

Okay, this is actually pretty cool. The atlas is huge and has tons of information within it. No wonder there were tons of helping hands who created this map(s) of insightful looks at demographic and political debate.

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The Authoritative Map


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Mr Ortloff's curator insight, October 8, 2013 12:26 PM

In the Winnie the Pooh Movie Pooh's Grand Adventure, the character Rabbit has absolute confidence in the printed word and especially the map.

 

Questions to ponder:  How much do we trust any given map?  How much should we trust a map (or the printed word)?  What makes a document reliable or unreliable? 

Melissa Marshall's curator insight, November 28, 2013 1:04 AM

The user is putting total trust in the map to get from A to B. How can we trust the map? What are the features of good infromation? A useful discussion-starter.

Steven Flis's curator insight, December 16, 2013 3:38 AM

I think this video is a perfect example of todays modern soceity. Many people in this would today are exactly like rabbit, they believe everything they see without questioning its integrity. this has cause alot of problems in todays internet fueled world with anyone being able to post whatever they want and call it fact. This is where we need more people like Pooh who question everything. Pooh sees where he wants to go with his own eyes and can tell that rabbit is leading him the wrong way. This is relateable to so much in geography but to keep it simple ill compare it to Pythagoras proclaimed the earth was spherical. He question something everyone in the world took as a fact and nobody believed him because it was already stated that the world was flat. Just like pooh questioning the "offical map"

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Esri Story Map Treasure Hunt

Esri Story Map Treasure Hunt | STEM Connections | Scoop.it

Although these were designed specifically for GIS day during Geography Awareness Week, these 2 excellent map-based treasure hunts from ESRI are great any time of year.  The answer to the question will only pop up in you are zoomed in the the right region (SHIFT + Make a box = Zoom to area).  These links will take you to the World Cities quiz and also to the Mountains quiz.


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Raymond Dolloff's curator insight, September 9, 2015 2:31 PM

Best way to challenge your brain to become more familiar with where places are within the world. Ranging from the most populous area in the world to where a historic city is.

Hamza Amjad's curator insight, September 9, 2015 2:48 PM

Creative and fun way of learning about world geography!

Mark Hathaway's curator insight, September 9, 2015 2:52 PM

I enjoyed this exercise, it was fun and creative.