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In this activity (6th on the page), learners investigate how photoreceptors in the eye (rods and cones) "adapt" to low light conditions.

This activity is a sensory experience that recreates the sounds of a pond at night.

This is a virtual representation of a sound mixer containing pre-looped sounds of animal, insect, and environmental noises.

In this data collection and analysis activity, learners evaluate fish physiology and ecology using vision research data from Dr.

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

This is a virtual representation of a sound mixer containing pre-looped sounds of animal, insect, and environmental noises.

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 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.

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?

Use this hands-on activity to demonstrate infrared and thermal radiation.