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In this activity, learners will use Google Sky to observe features of the night sky and share their observations.

In this activity, learners discover how to determine the distance to a lightning strike or nearby thunderstorm.

In this game-like activity (5th activity on the page), learners explore their auditory acuity as well as the importance of having two ears.

In this activity, learners use their imaginations and picture a scene in their heads.

In this activity, learners will explore how the voice works and feel the vibrations produced by vocal cords.

In this game (4th activity on the page) about hearing, learners test their ability to identify various sounds without looking.

In this activity, learners will explore the ways natural materials can produce sounds. Appropriate for any age, learners can make individual music or create a symphony with others.

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

In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

In this optics activity, learners conduct an experiment to find out why two eyes are better than one!

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

Use this Moon Map Guide to help learners identify features on the Moon, while looking through a telescope.

In this activity, learners listen to songs and decode hidden messages based on the same principle as a modem. As a final challenge, learners decode the binary messages in a music video.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

We listen to stereo music systems, tv's, and radios because it simulates being where the sound originates.

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 series of three quick science activities to do with a spoon, knife, and fork. In the first two activities, learners use the flatware to explore optics, mirrors, reflection, and distortion.

In this activity, learners create a water prism to break light into the seven colors of the rainbow.

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

If you got a big graduated or clear cylinder, water, a pipe, and a tuning fork, you've got a sound learning opportunity! Learn about resonance with this Exploratorium Science Snack.