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This is an activity where learners will compare the different metamorphosis stages of amphibians.

In this activity, learners create a colorful bookmark using a super thin layer of nail polish on water. Learners discover that a thin film creates iridescent, rainbow colors.

In this activity, learners touch and observe skulls of sharks and rays to learn about their diversity (over 400 species of sharks alone!).

In this interactive game, learners listen to the songs of four different thrushes and then try to match each bird with its song.

In this activity, learners examine nanoscale structures of common things.

In this quick and easy activity and/or demonstration, learners use two empty 2-liter bottles and hot tap water to illustrate the effect of heat on pressure.

In this online activity, learners discover how random variation influences biological evolution.