Curated OER
Soil Microbiology- Nitrogen cycle
Students take a virtual trip to a Catfish Aquaculture Pond and analyze soil bacteria to determine how many nitrogen cycle bacteria are present. They graph the number of colonies present and use data to determine ammonium levels in the soil.
Curated OER
Dirt Life
Students select and collect soil samples from a variety of locations (schoolyard, home, etc.). They do this lab after an interest-generating discussion about "dirt" and microbes. Students make a dilution in sterile water, plate it on a...
Curated OER
What are the Chemical and Microbiological Effects of Run-off from a Catfish Pond on the Surrounding Soil and Water?
Students study data from a USDA catfish pond. They look for microbial populations and chemical concentrations in the runoff to determine the effectiveness of filter strips. They use their knowledge of biogeochemical cycles to explain the...