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In this optics activity, learners build a spy tool to secretly view things over walls or around corners.

In this activity, learners will explore the roles of different animals in the food chain. They will create their own food chain using organisms of their choice.

In this engineering activity, learners construct sturdy geodesic structures out of gumdrops and toothpicks. Use this activity to explore engineering principles as well as sturdy shapes and triangles.

During this activity, learners take part in a variety of tasks which involve moving and balancing different body parts.

The goal of this activity is to design the fastest sailboat or one that carries the most treasure.

In this activity, learners will experiment with salt and ice in order to turn a bag of ingredients into ice cream.

This activity is an investigation of static electricity. What happens when you get "static cling?" Basically, you pile up electrons on one thing, which attracts the protons in something else.

In this neuroscience activity (5th activity on the page), learners explore their sense of touch without using their senses of vision and hearing.

Educator Amy O'Donnell from the American Museum of Natural History guides learners to create a diorama of a coral reef.

This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.

“Exploring the Solar System: Ice Orbs” is a hands-on activity in which visitors investigate a frozen orb, trying to learn about objects hidden inside.

This is an activity about center of gravity. Learners will balance a fork on a glass by finding its center of gravity.

Are fingers the only place on the body where we use our sense of touch? In this activity (6th activity on the page), learners test the touch sensitivity of different parts of the body.

In "Chemistry Makes Scents," participants use their noses to distinguish between chemicals with very similar structures.

In this activity, learners will create a model rocket out of an inflated balloon attached to a straw on a taught string.

In this activity (page 5 of the PDF), learners will create a food web and explore food sources for different organisms. They will identify relationships between organisms in an ecosystem.

In this activity, learners create models of bugs. Learners use household materials like plastic cups and straws to create models of bugs like centipedes and spiders.

In this activity, learners explore the unseen force of friction and how surfaces can slow moving objects at different rates.

During this activity, learners will make different versions of "ooze" using varied proportions of detergent and glue.

In this activity, learners explore sound by constructing their very own banjo out of a coffee can. Learners experiment with the canjo to change the instrument's pitch and timbre.