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Topographic Investigation: Map an Underwater Surface
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In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.

Jet Propulsion
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In this two-part activity, learners work in pairs to examine the four basic stages of a turbine engine.

Airfoils
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In this experiment, learners discover how an airfoil creates lift. Learners use simple materials to build an airfoil and test it at different angles to investigate Bernoulli's principle.

Comparing Sizes of Microorganisms
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In this activity related to microbes, learners create scale models of microorganisms and compare relative sizes of common bacteria, viruses, fungi and protozoa using metric measures: meters, centimete

Clipper Creations
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In this activity, learners create a working model of a nail clipper. This activity helps learners learn the basic principles of simple machines, engineering design and model building.

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

Wind Tube
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In this activity, learners explore moving air and the physics of lift and drag by constructing homemade wind tunnels.

The Parachuting Egg
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In this activity, learners work in groups to design a parachute out of household items that keeps an egg secure when dropped from a certain height.

Modeling the Night Sky
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In this two-part activity, learners explore the Earth and Sun's positions in relation to the constellations of the ecliptic with a small model.

Column Chromatography
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In this activity, learners separate the components of Gatorade using a home-made affinity column.

Dance Diagram
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Teams of learners use a series of stick figures made from pipe cleaners to model a dance routine. Then, they use this model to communicate to another learner who performs the dance routine.
Plants: Hanging Tough
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In this hands-on activity, learners will become familiar with the special adaptations of rainforest plants and discover the conditions needed for tropical trees to survive along with what can impinge

To Topo Two
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In this activity, two groups of learners create two separate landform models out of clay (mountains and valleys).

Traveling Nanoparticles Model
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This is an activity (located on page 3 of the PDF under Nanosilver Activity) about diffusion of small molecules across cell membranes.

Paper Bridges
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In this activity, learners build bridges using paper and explore how much weight each bridge design can support.

Straws and Pins
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In this activity, learners build bridges and cantilevers in a series of "building out" challenges with straws and pins.

Exploring Black Holes and Gravity
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This fun and simple hands-on astronomy activity lets learners imagine what would happen if our Sun were replaced with a black hole.

Model Well
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In this quick activity about pollutants and groundwater (page 2 of PDF under Water Clean-up Activity), learners build a model well with a toilet paper tube.

Finding Fossils
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This activity (located on page 4 of the PDF under GPS: Baby Dinosaurs Activity) is a full inquiry investigation to determine the age of fossils based on where they are discovered.

Old Faithful Plumbing Investigation
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This activity (located on page 3 of the PDF) is a full inquiry investigation into mapping the underground “plumbing” of geysers.