Curated OER
Explore: 5th Grade Dissolved Oxygen
Fifth graders, in groups, use basic science process skills to measure and compare the dissolved oxygen levels and pH levels of distilled, stream, and pond water.
Curated OER
Monitoring Oxygen Level
Students measure oxygen percentages in room air and air exhaled after they perform various activities. They explore various websites, and record and analyze the data from the experiments.
Curated OER
Oxygen Levels and Aquatic Plants and Animals
Learners design an experiment to test the effects of a change in the amount of dissolved oxygen of water on aquatic plants and animals. Questions are offered for exploration and experiment design. Results are tabulated and conclusions...
PBS
Pbs Learning Media: Atmospheric Pressure
Did you know that air has weight? This illustrated essay from the NOVA Web site explores conditions that affect air density and atmospheric pressure.