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River Catcher
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In this activity (located at the top of the page), learners make an easy river strainer and see what they can catch.

Heart of the Matter
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In this activity, learners explore the concept of valve operation and how engineers have adapted valves for use in mechanical heart valve design.

Camera Projector
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In this activity (posted on March 14, 2011), learners follow the steps to construct a camera projector to explore lenses and refraction.

Sniffing for a Billionth
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This is an activity (located on page 4 of the PDF under What's Nano? Activity) about size and scale.

Biodiversity of Feet
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This activity (on page 3 of the PDF under GPS: Biodiversity Activity) is a full inquiry investigation into biodiversity.

Forensic Science: Hair Sample Investigation
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This activity (on page 2 of the PDF under SciGirls Activity: Forensics) is a full inquiry investigation into how hairs from a crime scene are matched to suspects.

Animal Ears
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This activity (page 2 of the PDF under SciGirls Activity: Horse Ears) is a full inquiry investigation into animal behavior and communication.

Hydraulic Car
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In this activity, learners build cars using syringes and water-powered hydraulics. Learners construct the car frame out of cardboard and set up a hydraulic system to raise and lower the car.

Propeller-Powered Car
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In this activity, learners construct cars that are powered by hand-made, electric propellers.

Out of Sight: Remote Vehicle Activity
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In this robotics activity, learners drive a remote-controlled car through a course to learn the challenges faced while trying to operate a planetary rover.

Cardboard Opaque Projector
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In this activity, learners construct a projector out of cardboard to view their favorite images (such as storybook illustrations) on the wall.

Build a Tree
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This activity (on pages 13-18) has learners build a model tree and then figure out how to make their tree stand up by itself.

Structure of Matter: Pigment vs. Iridescence
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This is an activity (located on page 3 of the PDF under Butterfly Wings Activity) about how visible light is affected by tiny nanoscale structures, producing iridescence on butterfly wings, soap bubbl

Smooth Operator
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In this activity, learners explore surgical instrument design. Teams of learners construct surgical instruments from everyday materials.

Exploration Vehicles
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Using recycled materials, learners will design a transportation vehicle to carry an egg in an egg toss (a rudimentary model of a shock absorbent transport vessel).

Cardboard Automata
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Cardboard Automata are a playful way to explore simple machine elements while creating a mechanical sculpture.

Sticky Structures
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In this engineering/design/arts and crafts activity, learners design and build "platforms" or "bridges" that can hold weight, and test which glue makes the strongest structure.

I Spy, Describing Insects
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In this activity, learners observe and describe the physical and behavioral characteristics of insects, including crickets.

Try Your Hand at Nano
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This lesson focuses on two simple activities that younger learners can do to gain an appreciation of nanotechnology. First, learners measure their hands in nanometers.

Marble Drop Game
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Build your own version of a favorite carnival game, in which a marble races down a maze consisting of rows of nails.