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Defining Density
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In this introductory demonstration and activity, learners are introduced to the concept of density as they explore a rock and a wooden block in water.
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Changing the Density of an Object: Changing Shape
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Learners will see that changing the shape of an object, like a clay ball, that is more dense than water, can affect whether the object will sink or float.
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Funny Putty
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In this chemistry activity (page 1 of PDF SciGirls Activity: Milk Carton Boat), learners will create a blob of stretchable funny putty out of a water, borax, and glue mixture.
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Traveling Through Different Liquids
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Learners observe and record what happens when they manipulate bottles containing a liquid (water or corn syrup) and one or more objects (screw, nail, paper clip).
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Ask an Elder
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In this activity, learners listen to a story and tell a story of their own as they learn about the importance of elders in Native American cultures.
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Pinball Wizard
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In this hands-on engineering project, kids use two simple machines, levers and inclined planes, to construct their own pinball machines.
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Launch It
Add to list DetailsIn this design challenge activity, learners use a balloon and other simple materials to design an air-powered rocket that can hit a distant target.
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Basking Basics
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In this activity, learners will explore reptile biology by taking temperature readings in various places and comparing them.
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Sandy Samples
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In this collecting/comparing activity, learners work with samples of sand from different places like a lakefront, river, or ocean beach.
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Gumdrop Dome
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In this activity (located on pages 23-24 of the PDF), learners are introduced to structural engineering and encouraged to practice goal-oriented building.
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Radioactive Decay of Candium
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In this simulation, learners use M&M™ candy to explore radioactive isotope decay.
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Kool Colors
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Learners investigate how temperature affects the rate of chemical reactions by observing how steel wool reacts with various types of Kool-Aid solutions at different temperatures.
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Spaghetti Bridge
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In this engineering activity, learners investigate the differences between the strength of bridges made from flat and round building materials.
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Wave Machine
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This is a great activity about wave interference. Learners will create their own wave machine and discover wave properties through hands-on investigation.
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Evaporation
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This three-part activity consists of an activity that groups of learners develop themselves, a given procedure, and an optional demonstration.
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Secret Codon
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In this activity, "write" a secret message in genetic code as beads on a string.
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Comparing the Density of Different Liquids
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Learners carefully pour vegetable oil, water, and corn syrup in any order into a cup and discover that regardless of the order they are poured, the liquids arrange themselves in layers the same way.
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Animal House
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The goal of this activity is to design, build and test a house or toy for an animal.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-314.jpg?itok=5Pcs7Kc-)
Hidden Color Chemistry
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In this activity, learners will discover what colors are in different markers, and may be surprised at the results.
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Bouncing Balloons
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In this sports-themed engineering activity, learners create super bouncy balls out of balloons. Learners brainstorm, test their designs, and share results.