Curated OER
Oxygen-Carbon Dioxide Cycle
Fifth graders observe a diagram of the oxygen-carbon dioxide cycle to know that when they breathe out, they exhale carbon dioxide as do animals. They observe an aquarium containing both plants and fish and discuss the cycle. They then...
Curated OER
Ecosystems Beneath the Surface
Sixth graders create a KWL chart about microorganisms. In this biology lesson, 6th graders create and label a diagram on a microbial mat. They investigate the processes involved in the carbon, oxygen and sulfur cycles.