Curated OER
Amphipods
Students identify organisms that live at the bottom of the body of water. In this biology lesson, students evaluate the effects of pollution to amphipods population. They examine collected data and create a bar graph comparing them.
Curated OER
Salinity Of Soil
Fourth graders investigate the contents of various types of soil to determine the differences in salinity levels. They conduct an experiment of observing the plants in the different soils. Students then determine survival rates by...