Curated OER
Sand or Rock? Finding Out From 1,000 km
Students observe how measurements are made with different instruments. In this remote sensing lesson students investigate the physical state of surfaces including the surfaces of the solar system.
Curated OER
Effects of Weathering
Here's a great geology lesson for 3rd graders on weathering and erosion of soil. After a class discussion on how nature can "move a mountain," learners take a look at how a modern phenoma called acid rain can also cause weathering and...
Curated OER
Location
Students explore the tools used by Columbus to chart his latitude. They study the change of a location over time.