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Chemical Change
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In this chemistry activity, learners explore the amount of copper in a new penny. Learners use toilet bowl cleaner to hollow out the interior of a penny with zinc inside.
Trash Traits
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In this activity on page 24, learners perform experiments to examine whether or not trash can float, blow around, or wash away.
Weighty Questions
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In this activity about humans and space travel (page 1 of PDF), learners compare and contrast the behavior of a water-filled plastic bag, both outside and inside of a container of water.
Test Density with a Supersaturated Solution
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Learners create three solutions with different levels of salinity. They compare the density of these solutions by coloring them and layering them in a clear plastic cup and in a soda bottle.
Sink It
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Learners classify a variety of objects by their characteristics. They then design an experiment to determine which objects float or sink in water and add this characteristic to their classification.
Float Your Boat
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In this physics activity, learners will explore buoyancy.
Sinking Water
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In this experiment, learners float colored ice cubes in hot and cold water.
Design a Submarine
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Learners act as engineers and design mini submarines that move in the water like real submarines.
Buoyancy Bulls-Eye
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In this hands-on activity, learners will construct a scuba diver that can float in order to explore how sea creatures stay neutrally buoyant in the ocean and to see what kinds of forces might be influ
Simple Submarine
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Using simple, inexpensive items, learners build and test submarine models.
Boats Afloat
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In this activity, learners discover what buoyancy is and determine the characteristics that make an object buoyant. Learners design, build, test, and evaluate boats made from a variety of materials.
Milk Carton Boats
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This activity (on page 2 of the PDF SciGirls Activity: Milk Carton Boat) is a full inquiry investigation into boat hull design.
Flinker
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In this activity, learners make a foam packing peanut "flink"--neither float away nor sink--in water. Learners experiment with materials to make a Flinker that "flinks" for 10 seconds.