Curated OER
History of the X-Ray
Seventh graders discuss the history of the x-ray machine. For this social science lesson, 7th graders understand how a x-ray machine works. Students recognize that there have been many improvements to the x-ray machine over the...
Curated OER
My qualities
In this qualities worksheet, students fill in the blanks to sentences about their good qualities and what they can improve on. Students fill in 14 blanks.
Columbia University
Nasa: Sedac: China's Agenda 21
[Free Registration/Login Required] A comprehensive reform program proposed for the Chinese economy, environment, agriculture, transportation, etc. The full text for all 69 programmes are linked to this page.