Cornell University
Bacteria Take Over and Down
Bacteria outnumber all other forms of life on Earth. Scholars observe the growth of bacteria in petri dishes to understand their role in maintaining good health. Then, they observe the growth of bacteria after they introduce...
Curated OER
Water Filtration
Students investigate our water system and how it is filtered. In this science instructional activity, students perform a laboratory activity to investigate the process that goes into filtering water. They relate this activity to other...