American Chemical Society
American Chemical Society: Explore Chemistry: Water and Chemistry
Explore water's unique properties in the activities here. Includes ideas for starting a chemistry club, ideas for Earth Day, articles, and videos.
![Ancient Mesopotamia: The First Farmers [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Ancient Mesopotamia: The First Farmers [Pdf] Lesson Plan")
University of Chicago
Ancient Mesopotamia: The First Farmers [Pdf]
In this lesson our class can try an experiment to show how constant irrigation, with repeated evaporation of water that left salts in the soil, eventually ruined much farming land in southern Mesopotamia.Students can fill a clear glass...