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In this activity, learners create and reveal secret messages written with invisible ink! The invisible ink is actually a baking soda solution, and the magical revealing liquid is fruit juice.

In this activity on page 7 of the PDF, learners investigate the solubility of gas in water at different temperatures. This experiment will help learners determine if temperature affects solubility.

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.

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