Curated OER
Cells and the Cell Membrane
Pupils investigate the properties of cell membranes by isolating the membrane surrounding chicken eggs. They set up an experiment by placing eggs in a vinegar solution for three days. A powerpoint lecture emphasizes the structure of the...
Curated OER
Mitosis And the Cell Cycle
Students determine the approximate time a cell spends in each phase of mitosis by counting cells in each phase from a prepared slide. They use a few simple calculations to estimate how long cells spend in each cycle in the body.
Curated OER
Bioterrorism: Development of a "Superbug"
Students compare bacteria and viruses and their roles in biotechnology and bioterrorism. They outline fundamental steps of bacterial transformation and the possible selection processes to identify transformants. They discuss...
Curated OER
Using a Controlled Experiment to Identify Two Unknown Plasmids
Student demonstrate knowledge of recombinant DNA techniques (restriction enzyme digest, gel electrophoresis, and staining gel). They demonstrate skills needed to complete a gel electrophoresis and interpret a stained gel. Pupils solve...
Curated OER
Language Arts: Plot Summary
Eighth graders implement plot summary organizers to identify essential elements such as conflict and resolution in literature. In pairs, they retell fairy tales to each other and complete plot summaries about them. As students read new...
Curated OER
Bacteria in Drinking Water And Water Purification
Students explore how sewer systems can contribute to water pollution and perform an experiment to see how well a water purification technique can protect against water-born microbial illnesses. They compare the bacterial growth from...
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Inquiry in Science Using an Animal Behavior Model
Young scholars observe a planaria without a microscope and with a stereoscopic microscope. They draw the planaria and describe its motion and eating habits. Students research planarias various body systems and behavior. They design an...
Curated OER
Testing Your Water
Students perform several water quality tests on groundwater from their area. They use test strips to determine the pH, hardness, alkalinity, nitrates, iron and chloride levels.
Curated OER
DNA Fingerprinting: You Be the Judge!
Students explore DNA fingerprinting. Students discover how DNA fingerprinting is done and judge the validity. They evaluate the use of certain prints in courts and address the ethics of establishing a national database of fingerprpints.