Curated OER
Layer By Layer
Have your class learn about the formation of the Grand Canyon using this lesson. After listening to a variety of stories about the Grand Canyon and erosion, learners complete worksheets related to the geology of this area. What a...
NASA
Nasa Earth Observatory: Changing Global Land Surface
Learn how scientists view the changes in the land surface made by humans over time. Read questions that scientists pose to answer some unknown questions about global land surface and learn several things scientists are doing to try to...