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In this activity, learners work in teams to study the observation skills essential to scientific research.

In this outdoor activity/field trip, learners investigate organisms that live along the ocean's rocky coast.

In this outdoor activity and observation game, learners hunt for a variety of textures, colors, odors and evidence of organisms in the activity site.

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.

In this set of outdoor games, learners play the role of monkeys that are trying to get enough resources (food, shelter, and space) to survive.

In this activity, learners make a photographic image—without a camera!

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

Have you ever heard of a camera without a lens? In this activity, learners create a pinhole camera out of simple materials. They'll see the world in a whole new way: upside down and backwards!

This activity (9th activity on the page) about hearing demonstrates to learners the importance of having two ears.

An ordinary camera has a lens that makes an image on film. In a pinhole camera, a small hole replaces the lens.

This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.

In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick.

In this outdoor activity, learners work in pairs using their senses—especially touch—to learn more about individual trees.

Learners will explore the concept of angular distance, and investigate why the moon appears to be the same size as the sun during a solar eclipse, despite the sun being much larger.

In this math activity related to light, learners assemble a photometer and use it to estimate the power output of the Sun.