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Currently Working
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Learners test solutions of water, sugar, salt, and hydrochloric acid for electrical conductivity. They immerse leads from a lighting device (a battery pack connected to an LED) into each solution.

Milli's Super Sorting Challenge
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In this activity, learners separate materials based on their special properties to mimic the way recyclables are sorted at recycling centers.

Sky Diver
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Students design and build their own parachutes in this hands-on engineering project.

Balloon Flinker
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In this activity, learners make a helium balloon "flink"--neither float away nor sink to the ground. Use this activity to introduce physics concepts related to gravity, density, and weight.

Outrageous Ooze: Is It a Liquid or a Solid?
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This activity provides instructions for using cornstarch and water to make an ooze which has the properties of both a solid and liquid.
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

COSI Quicksand
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In this chemistry experiment, learners get to make a very bizarre substance using corn starch and water. Is it a solid? Is it a liquid? Or is it a different kind of substance entirely?

CD Air Puck
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In this activity, learners will use a compact disc to build an air puck that can glide across a smooth tabletop. The puck glides with almost no friction on a cushion of air escaping from a balloon.

How Our Environment Affects Color Vision
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In this lab (Activity #1 on page), learners explore how we see color.

Unleakable Bag
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In this activity, learners explore the flexibility of polymer chains by pushing sharpened pencils through a Ziploc bag.

Dancing Raisins
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In this activity, learners will explore density and it's relationship with mass.

Paper Cup Stool
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In this activity, learners will explore how and why weight distribution works.

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).
Leaves: Designing Leaf Arrangements on a Branch
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In this hands-on activity, learners investigate the functional design of leaves on a tree.

Gummy Growth
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In this activity related to Archimedes' Principle, learners use water displacement to compare the volume of an expanded gummy bear with a gummy bear in its original condition.

Phantom Phlame
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In this trick, hold your hand over a burning candle without getting burned, by reflecting and transmitting the light of two candles. This activity is best suited as a demonstration.
Diffraction Between Wax Blocks
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In this optics activity, learners explore diffraction by adding wax blocks to a ripple tank. The wedge-shaped blocks act as obstacles that the wave must bend around.

Marble Run!
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This activity (on page 2 of the PDF under SciGirls Activity: Luge) is a full inquiry-based challenge related to motion and design optimization.

Crystal Painting
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In this activity, learners will "paint" their own crystal artwork by creating a picture with a super saturated salt solution.

Atoms and Matter (K-2)
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In this activity, learners explore atoms as the smallest building blocks of matter. With adult help, learners start by dividing play dough in half, over and over again.