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Which Parachute
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In this activity, learners will engineer three different parachutes to test how well each one works.
Keep-a-Cube
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In this activity, challenge learners to keep an ice cube from completely melting in 30 minutes. Learners engineer a box or wrap to prevent an ice cube from melting.
Lava Layers
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In this activity (on pages 11-12 of PDF) learners create models of lava layers that have formed on the moon.
Kaleid-o-mania
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In this hands-on activity, learners build their own kaleidoscopes and explore how light can reflect of off surfaces such as mirrors, to produce beautiful patterns.
Plants Around a Building
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In this outdoor activity, learners discover how the environment around a building affects the growth of plants.
Thrill Ride
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In this activity, learners will build a roller coaster for a marble to run on using everyday household materials such as paper towel or toilet paper rolls, cups, boxes, books, buckets, chairs, etc.
Blow It Away
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In this activity, learners design wind-powered cars out of simple household materials. Students have fun designing and then racing their vehicles around the room.
Watercraft
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In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.
T-Shirt Transformation
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In this activity, learners will repurpose an old t-shirt to create their own yarn or string.
Stem Cell Differentiation Game
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This game uses a modified Uno deck to review concepts related to stem cell research and diabetes.
Touch Down
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In this design challenge activity, learners build a shock-absorbing system that will protect two “astronauts” when they land.
Balloon in a Flask
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Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.
Caring Together: Activity Stations
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In this Bob the Builder(TM)-themed activity, learners explore the 3Rs (Reduce, Reuse, Recycle) by rotating through several activity stations.
Rutherford Roller
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In this activity, learners make a black box device that serves as an excellent analogy to Rutherford's famous experiment in which he deduced the existence of the atomic nucleus.
Build A Dome
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In this activity, learners explore the structural strength of triangles by creating their own free-standing geodesic dome out of plastic straws.
Spinning Illusions
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In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.
Moo Glue
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Using a milk-based recipe, learners create "moo glue" which is basically white school-type glue. The "secret ingredient" in milk that helps make glue is a chemical called casein.
Leaning Tower of Pasta
Learners build structures from spaghetti and marshmallows to determine which structures are able to handle the greatest load.
Air Cannon
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In this activity (page 1 of PDF under SciGirls Activity: Forecasting), learners will construct an air cannon by cutting a hole in the bottom of a bucket and stretching a garbage bag over the other end
Swing in Time
Learners build and investigate pendulums of different lengths. They discover that the longer the string of the pendulum, the longer the time it takes to swing.