Curated OER
Why Do We Need Petroleum?
Students learn the many ways petroleum is used in our industrial society, and the advantages and disadvantages of its use. They explore what it would be like to live in a world without petroleum.
Missouri University of science & Technology
General Overview History of the Panama Canal
Called the Eight Wonder of the World by some and the Big Ditch by others, the Panama Canal is indeed an engineering marvel. The long, complicated, and sometimes controversial history of the canal is captured in a presentation loaded with...
CK-12 Foundation
Ck 12: Life Science: Echinoderms
[Free Registration/Login may be required to access all resource tools.] You're probably familiar with starfish and sand dollars. They are both echinoderms. Sea urchins and sea cucumbers are also echinoderms. What's similar between these...
California Academy of Sciences
California Academy of Sciences: Echinoderm Webpage
Resource provides a brief overview of echinoderms. Includes pictures and links for more information.