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In this activity, learners make a model of the hot water of a deep sea vent in the cold water of the ocean to learn about one of the ocean's most amazing and bizarre underwater habitats.

In this activity, learners "go fishing," then practice ruler use and size/pattern comparison with the animals they catch.

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

In this online activity, learners test their ability to hear different frequencies and compare their frequency range with the frequency range of other animals and insects.

In this activity about sea otters, learners make their own "otter whiskers" and use them to find objects underwater.

In this interactive game, learners will test their memory of animal and insect sounds. Flip over cards, listen to the sound, and try to find the ones that match.

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

In this activity, learners can play two card games related to endangered species, specifically North American amphibians.

This is an online simulation of how sound changes due to environment. How does place--like a cave, a pier, or a forest--affect certain sounds?