Curated OER
Two Rivers Ran Through It
Sixth graders discover the problems that early Mesototamian farmers faced while developing agriculture in the land between the Tigris and Euphrates Rivers. They design a working model that solves those unique challenges.
PBS
Pbs Learning Media: How Disruptions Affect Animal Populations
Students explore the effects that ecosystem disruptions can have on animal populations. They learn about the disruptions that have driven three species-the Madagascar fish eagle, the Iberian lynx, and the rowi kiwi, to the brink of...