Monthly Archives: February 2015
A new article in ArcNews entitled Four Guidelines for the New GIS Professional not only offers insights for those new to the field of GIS, but also for educators who teach the subject and who use it as a tool to teach history, geography, earth science, and other subjects.
The article identifies four strategies that can ensure that a GIS professional remains at the forefront of this profession: (1) Build a strong platform; (2) Extend the platform across the organization; (3) Leverage existing GIS investments; and (4) Be active in the GIS community. I believe that educators can use the “building and extending the platform” strategies as an encouragement to spread spatial thinking and GIS beyond their own classroom walls. If you are at a university or community college, that might mean giving a few presentations each academic year to colleagues across campus, in history, language arts, biology, or another discipline that is maybe a bit outside your comfort zone. Spatial thinking has a way of bringing diverse disciplines together around the “whys of where”, solving problems, and providing career pathways for students. If you are at a primary or secondary school, it might mean a presentation at a faculty meeting where you discuss why you are using GIS in your instruction, or having your students discuss their work at a school assembly, or conducting a hands-on workshop for educators in another school or the neighboring school district.
Leveraging existing GIS investments implies that, like anything worthwhile in education, teaching with GIS requires time and effort. These efforts will be longer lasting and more impactful on students if they are conducted in collaboration with your education colleagues on your campus or in your school district, or with colleagues far away who share similar interests. And finally, being active in the GIS community is important for geospatial educators, to garner support for your efforts from administrators, to share instructional practices, data, maps, and apps, and to share your stories so that others will be inspired to use these approaches and tools in their own instruction.
The article points out four ways that the “GIS technology ecosystem” is rapidly changing, including cloud-based GIS, the widespread use of web mapping, the increasing adoption of open data, and the app revolution. What do these and other changes mean for the GIS educator?
The article reminds us that this is an exciting time in GIS. New applications and a growing awareness of the power of GIS are accelerating the need for skilled people in this field. Web mapping and visualization have opened the world’s eyes to the power of the spatial visualization of information and are transforming how people understand the world. You, as a GIS educator, are key in making this happen, by enabling students to visualize, question, analyze, and interpret our world.
One theme that we frequently discuss in teaching and learning with GIS is that maps are representations of reality. To be sure, they are very useful representations of reality, but they are representations nonetheless, laden with meaning, different possibilities for interpretation, and yes, some distortions and error. In the fast-paced world that GIS analysis and creating maps has become, it is easy to lose sight of these representation fundamentals when we have maps and imagery at our fingertips, at multiple scales and over multiple themes.
In a video, I discuss just one place where care needs to be made in interpreting maps. In the video, observe my surroundings as I stand near the traditional “line” that divides the deciduous forest to the south from the coniferous forest to the north in North America. On most maps, this is indeed shown as a line. However, consider the following: Is the “line” really a line at all, or is it better described as a gradual change from deciduous to coniferous as one travels north? Is that vector line then better symbolized as a “zone”, or is vegetation better mapped as a raster data set, with each cell representing the percentage of deciduous and coniferous trees in that cell?
How many other data sets do we tend to see as having firm boundaries, when the boundaries in reality are far from being “firm”? How does that affect the decisions we make with them? Even the boundary between wetlands and open water were originally interpreted based on land cover data or a satellite or aerial image. In another example, as stated in the GIS and Public Domain Data book, contour lines are not surveyed lines, but rather are interpreted, often from aerial stereo pairs. And each data set that we can analyze with maps was collected at a specific scale, with certain equipment and software, at a specific date, and within certain margins of error that the organization established.
Maps are representations of reality. They are some of the most useful tools ever invented, but care needs to be taken when using this or any abstracted data. How might you be able to use these examples and considerations for “teachable moments” in your own instruction to foster critical thinking?
Growing up with three older brothers, I knew “synergy.” Football, frisbee, sledding, board games, card games, cardboard boxes, tag … all were much more fun together than the sum of what we could have done alone. The world is full of synergistic relationships.
Esri’s 2015 Federal Conference showed the synergy of the ArcGIS platform, answering the question asked by educators facing an expanding array of GIS tools: “Do I use ArcGIS Desktop, or go to ArcGIS Online with browsers, or go mobile? Desktop is powerful, but Online is easy, and mobile is ubiquitous.” The answer should “All of the above.”
Check out the Esri FedGIS Plenary videos. See how many times people are bringing data from the cloud to the desktop, doing analysis, merging with local data, pushing content to the cloud, displaying in browsers, doing analysis in the browser, pushing out content for mobile devices, gathering data on mobile for consumption back in a browser or on Desktop, and so on. The combination of tools is much more powerful than the sum of the parts. (And for a fast, fun example, see the “App Speed Dating” video (#19) to discover why more than one app can be useful.)
Our goal in education must be to help people learn to learn, be disposed to learning, crave it insatiably, and integrate constantly. Every day brings new content, skills, challenges, and opportunities. We need learners — of all ages — to be able to adapt, analyze a situation and see what is necessary, choose tools to accomplish key tasks, and maximize impact. We need to model this synergy for those who are already busy building tomorrow.
Charlie Fitzpatrick, Esri Education Manager
Do you have a desire to build your skills in location-based analysis, and to discover why location matters in our everyday lives? If so, sign up for a free 4 week Massive Open Online Course (MOOC) offered by Elmhurst College, beginning 1 March 2015.
The course explores why “where?” is vitally important to a myriad of disciplines in our digital world. Participants in the MOOC will learn what location technologies are used for, as well as fundamental geospatial concepts, skills and applications. Taught through video lectures, interaction opportunities and discussion forums, participants will complete exercises and run through real-world examples using online spatial software that works on any device with a Web browser. The MOOC is designed for those with no prior experience with geographic information systems (GIS) software all the way to advanced users. Participants will earn badges after each module, and those who complete six of the course’s seven modules will receive a certificate of completion. An additional certificate will be awarded for completion of all seven modules. Module titles include fundamental geography, fundamental computing skills associated with geography, creative thinking, problem-solving and decision-making in geography, geospatial tools and technology, business fundamentals of geospatial environments, and advanced abilities in the field.
One of my favorite things about this course is its adherence to the Geospatial Technology Competency Model (GTCM). Developing the personal, academic, workplace, industry, and management skills of the GTCM is a fundamental goal of the course. To keep in touch with the conversations around the MOOC, see @ECDigitalEarth and #mydigitalearth on Twitter. Hope to see you online in the course!
Some of the most remote locations on Planet Earth are the “poles of inaccessibility.” By definition, a pole of inaccessibility is the place most challenging to reach owing to its distance from locations that could provide access. On land, it is often referred to as the most distant point from a coastline, and in the ocean, the most distant point from any land.
A surveyor friend and colleague of mine, Jerry Penry, and a local student recently journeyed to the point in North America, on the Pine Ridge Indian Reservation, and documented their journey in an article in The American Surveyor. The three closest shorelines from this pole of inaccessibility are at Port Nelson on Hudson Bay in Manitoba, Canada; Everett, Washington, on the Pacific Ocean; and the shoreline of the Gulf of Mexico between Galveston and Port Arthur, Texas. Mathematicians have calculated the distance from the pole of inaccessibility of North America to be approximately 1,030 miles (1,657.6 km) to any of these three locations. The error of uncertainty is estimated to be around 9 miles (14.5 km) due to ambiguity of coastline definitions and mouths of rivers. This “uncertainty” makes for a teachable moment about map scale and data quality!
After researching the world’s major poles of inaccessibility, in North America, South America, Eurasia, Africa, Australia, oceans, Northern Pole, and Southern Pole, I created a short spreadsheet that I added into ArcGIS Online. I created a feature service out of the layer and used that service to create a 3D scene in ArcGIS Online for the Earth’s major poles of inaccessibility. In the 3D scene viewer, I created several slides so that the scene becomes what I hope is a useful teaching tool and one that demonstrates how easy it is to create 3D scenes for many other themes and topics. Anyone can zoom into each of the points and determine the landforms, land use, nearest towns and rivers, and other features near and far. Using my 2D map, anyone can measure the distance from each point to the nearest coastline. Which point of inaccessibility on the planet is furthest from a coastline?
How might you be able to create a 3D scene using ideas from a research article, current event, topic, or theme?