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Inflate-a-mole
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In this activity, learners conduct an experiment to find the volume of one mole of gas. Learners capture sublimated gas from dry ice in a ziploc bag and use water displacement to measure its volume.

Metal Noise Maker
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In this activity, learners explore how sound travels through solid objects better than through air. Leaners attach a metal clothes hanger to a piece of string and hold it to their ears.

Energy Use in the Americas
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Learners explore the relationship between energy consumption, population, and carbon emissions in the countries of the Americas.
Shrinkers
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Visitors use heat to shrink samples of polystyrene. They compare samples from containers that were shaped in different ways during manufacturing.
Concentrate: Concentrations and Reaction Rates
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Visitors incrementally increase the amount of iodate in three different test tubes containing the same amount of a starch solution.

Puzzled Partners
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In this web-based activity, learners try to figure out who in an online chat room has their matching puzzle piece.

Atomic Mobile
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Learners make a mobile model of a carbon atom using clay, wire, and pipe cleaners.

Growing Food From Scraps
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In this activity, learners will explore vegetative propagation while preparing food scraps to grow into plants.

Popsicle Bridge
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In this activity, learners explore how engineering has impacted the development of bridges over time, including innovative designs and the challenge of creating bridges that become landmarks for a cit

A Model Nuclear Power Plant Steam Turbine
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In this activity (on pages 20-23 of PDF), learners build a model of a power plant using simple materials.

Secret Messages
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In this activity, learners use Teflon (PTFE) tape to write secret messages.

Slide Whistle
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In this activity, learners build a slide whistle using PVC pipe, bamboo skewer, and piece of foam. Construction of the instrument is relatively simple.

Tourist Town: Dominating Sets
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In this activity, learners use a fictitious map of "Tourist Town" and counters to problem solve how to place ice-cream vans on street intersections so that every other intersection is connected to one

Exploring Fabrication: Self-Assembly
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In this activity, learners participate in several full-body interactive games to model the process of self-assembly in nature and nanotechnology.

Measure the Sun's Size
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In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

Ice on Mars
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In this activity, learners use sand and ice cubes to create a model of permafrost and the effects of the ice melting through the surface.

3 Classes of Levers
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In this physics activity (page 3 of the PDF), learners will move a load using a lever of each of the 3 classes. They will explore the differences between these classes and which are more effective.

Double Replacement Micro-Reactions
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In this chemistry activity, learners use common chemicals to examine reactions that occur between two aqueous solutions.

Shimmering Lenses
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In this activity, learners use Jell-O to explore lenses. Learners cut Jell-O into convex and concave lens shapes and examine how light exits each lens in a darkened room.

Papermaking at Home
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Learners will follow a specific process to make their own paper using scrap paper, newspaper, or junk mail.