Spatial pattern analysis.
Students will analyze their collected storm sewer data and investigate
patterns in the location of double-grated storm sewers.
1. Tell students we are going to look at their collected storm sewer data and investigate patterns in the location of double-grated storm sewers.
2. Model how to launch AEJEE and load the following shape files:
Northampton and Lehigh County Roads, Rivers, Landmarks shape file, and student
collected storm sewer data points.
3. Use a projected computer image to show students how to change the map displays to show the data in different ways.
4. Focus on map orientation and emphasize cardinal directions.
5. Define intersections.
6. Highlight how to change properties of each field attribute.
7. Show how to change attribute color.
8. Model how to identify patterns in the data. Scaffold this process.
9. Show students how to change the Properties to show only DOUBLE SEWERS on the GIS map. Show how to change colors of all other storm sewer types to white.
10. Ask students the following questions to highlight data patterns:
What type of storm drain occurs the most on our map?
What type of storm drain occurs the least on our map?
Where are most double storm drains located?
Is there a pattern for any type of storm drain on the map?
Students should observe that there are more double storm sewers in the northern part of the South Side.
11. Instruct students to launch AEJEE and load the following shape
files:
Northampton and Lehigh County Roads, Rivers, Landmarks shape file, and student
collected storm sewer data points.
12. Distribute The Attribute Table handout to each student.
13. Guide students through The Attribute Table
handout.
• Emphasize that when a row is selected in the attribute table, it is
displayed as a colored point in the GIS.
• Point out the different columns and note that these correspond to the
fields that they entered into the database from their data collection sheets.
• Emphasize that we think some students did not enter their data correctly
into the database. We are going to use the attribute table to find out.
14. After students explore the attribute table and complete the data table in the handout, review a few incorrectly labeled points on the GIS display.
Materials needed:
Handout: The Attribute Table
[Attribute_Table_handout.doc]
GIS files: Northampton Roads, Lehigh
County Roads, Rivers, Landmarks
shape file, and student collected storm sewer data points.
Instructional Sequence | GIS Storm Sewers Unit
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