Curated OER
Astronomical Scales
Students describe the different units of measurement. In this space science lesson, students calculate astronomical distances using a scale. They explain the significance of using scientific notation in expressing very small or very...
Curated OER
What Is In The Water?
Students investigate the biotic and abiotic factors that are found in an aquatic ecosystem. The emphasis is upon the investigation of present an projections of future water quality. Then students visit a local body of water to gather...
Curated OER
Water Quality Monitoring
Pupils comprehend the four parameters of water quality. They perform tests for salinity, dissolved oxygen, pH and clarity or turbidity. Students comprehend why scientists and environmental managers monitor water uality and aquatic...
Curated OER
Every Tree For Itself
Fourth graders play a game where they are trees gathering sun, water, and nutrients and CO2 represented by pieces of paper or poker chips. They record their collected requirements and graph how they grew as a forest.