Smithsonian Institution
Smithsonian Education: What's It Worth? Thinking About Weights and Measures
A lesson on the system of currency used by the Akan people of Ghana and how it compares to systems used today.
Smithsonian Institution
Smithsonian Learning Lab: What Is Currency? Lessons From Historic Africa
From the Smithsonian, this site offers lessons and resources on currency, its use (in the form of gold dust, salt, or metal objects) as an instrument of trade in historic Africa, and its requirements as an instrument of trade in the...