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In this activity, learners explore the concept of permeability to better understand why amphibians are extremely sensitive to pollution.

In this activity, learners examine their fingerprints and learn that they can be categorized by shape, but each fingerprint is unique.

In this activity (2nd activity on the page), learners explore the sensitivity of their sense of touch.

In this activity (7th activity on the page), learners use their sense of touch to identify mystery objects hidden in socks.