Practice data collection.
Students will use GPS devices to gather geographic coordinate data
of storm sewers.
Warm-up activity:
1. Launch AEJEE and present an overview of the application. Show how data gets
added and maps are displayed.
2. Instruct students to add the following GIS layers:
Northampton County streets layers, Lehigh County
street layers, and Landmarks layer.
3. Instruct students to create labels to show the names of the landmarks.
4. Instruct students to create labels to display street names on the GIS.
5. Show students the display of the cursor’s latitude and longitude position.
6. Instruct students to write the latitude and longitude of each landmark.
Main activity:
1. Restate the “driving scenario problem” from Day 1.
2. Show a GIS coverage of the South Bethlehem area streets around Broughal with a projected computer screen image. Add Rivers and Landmarks shape files. Show the sampling area around the school where the class will collect storm drain data.
3. Operationally define an intersection. The location where a North/South street meets an East/West street. Show examples of intersections and non-intersections. Show that an intersection can dead-end at a “T”.
4. Introduce the concept of locating a storm sewer at an intersection. Define a storm sewer located at an intersection as: The edge of a storm sewer is located at least 20 feet from the closest point where the two intersection streets meet.
5. Handout Data Collection Sheets to students and provide explicit instruction on how to record data on the data collection sheet.
6. Emphasize accuracy and validation in data collection.
7. Clearly articulate behavior expectations for going outside.
8. Go to an intersection with paper maps and Data Collection
Sheets of area.
Focus on cardinal directions – N, S, E, W and map orientation.
Identify different storm sewer types and determine if they are located at an
intersection.
Provide explicit instruction on how to record data on the data collection sheet.
9. Ask students at intersections:
• Are we on the north side or south side of the street?
• Are we on the east side or west side of the street?
10. At intersections, have students point out on the paper map where they are currently standing.
11. Use a tape measure to measure the distance of the storm sewer to the curb to determine if the storm sewer meets the definition of being at an intersection.
Materials needed:
GPS units
Clipboards
Paper map of area
Tape measures
Handout: Data collection sheets
[data_collection_sheet.doc]
Instructional Sequence | GIS Storm Sewers Unit
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Copyright ©2008 Broughal NASA Explorer School/Lehigh University
Partnership. All rights reserved.
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