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In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain.

In this activity on page 11 of the PDF, learners follow simple steps to recycle old newspaper into new paper.

In this activity, learners cut out a fish and then "paint" it using universal indicator and acids and bases.

In this activity, learners write invisible messages on goldenrod paper, and make the message appear and disappear using acids and bases.