Two streams, two stories... How Humans Alter Floods and Streams part of Activity Collection
An activity/lab where students determine the changes in 100-year flood determinations for 2 streams over time.

Something is Askew at Mammoth Cave National Park part of Teaching Methods:Teaching with SSAC:Examples
Spreadsheets Across the Curriculum/Geology of National Parks module. Students use the geometric mean and multiplicative standard deviation to examine the right-skewed distribution of nutrient concentrations in water-quality data at Mammoth Cave National Park.

Quantitative Classroom Exercises part of Activity Collection
The four exercises give students an opportunity to use their knowledge of graphs, algebra, and maps to solve simple geological problems.

Water Quality-Total Dissolved Solids part of Teaching Methods:Teaching with Data:Examples
Students use a microcomputer connected to a conductivity probe to measure the total dissolved solids in local area water samples.

Utilizing National Wetland Inventory (NWI) shape file datasets for import into MyWorld part of Tools and Datasets:DataSheets
The NWI provides data in ESRI Shape file format. The datasets are queried by state and 100K or 25K USGS quadrangle. Data fields include freshwater emergent wetland, freshwater forested/shrub wetland, freshwater ...

Global Environmental Obstacles part of Courses
The course uses Mackenzie's Our Changing Planet as a template and investigates world population, diminishing water resources, anthropogenic effects on the atmosphere (ozone hole and acid rain), and global ...

Water Quality Acquisition part of Activity Collection
Students practice their field water sample collection and water quality assessment skills and study acid mine drainage.