Curated OER
WALK, DON'T RUN
1. Bring two quarts of moist soil, a cake pan, a sprinkling can of water and a quart of grass clippings to class.
2. Share background material, and introduce the word "erosion."
3. Prepare a small model hill by mounding the soil in the...
National First Ladies' Library
A Blessing in Disguise
Young scholars study the history of polio as well as a history of modern medicine, the history of alternative medicine and the role of the scientific method in each of these histories. They review the scientific method and research...
Smithsonian Institution
National Museum of American History: Powering the Past: Emergence of Electrical Utilities in America
Looks at the history of electrical utilities in the United States from the time of Edison up to President Franklin Roosevelt.