PBS
Pbs: The Conquistadors: Growth of the Inca Empire
Find out about the incredible and widespread Inca Empire. You can read about the geography of the empire, the religion, governmental structure, record-keeping system, and diet. Be sure to click on the hyperlinks or pictures to get even...
Khan Academy
Khan Academy: Introduction to the Inka
The Inka had developed a complex culture deeply rooted in the traditions that came before them. Their textiles, ceramics, metal- and woodwork, and architecture all reflect the materials, environment, and cultural traditions of the Andes....
University of California
Center Science Edu.: Electromagnetic Radiation on Trial
Here is a 1-5 day unit on electromagnetic radiation that features a teacher guide and student activities with extensions.
Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Quipu
Quipu is an Inca recording device.