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In this activity, learners find Xi'an, the archaeological area in China where the Terra Cotta Army was discovered, on a map or globe and look more closely at the relationship of the warrior site to ot

Learners develop an understanding of air pressure in two different activities.

In this activity, learners examine the culture and history of the tomb site.

Water treatment on a large scale enables the supply of clean drinking water to communities.

Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.