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Carousel Pump
Source Institutions
In this activity, learners build a carousel toy that spins when pushed down.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-947.jpg?itok=_rUhPLCR)
Cupcake Delivery
Source Institutions
In this design challenge, learners will create wind-powered contraptions to transport a load, such as a cupcake or another small object, and test to see if they work.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-357.gif?itok=blHTfrM_)
Our Sense of Sight: Color Vision
Source Institutions
In this activity, learners investigate color vision as well as plan and conduct their own experiments.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-502.jpg?itok=29FMlgkB)
Nebula in a Jar
Source Institutions
In this activity, learners will build a model of a nebula using cotton balls and colored water. Astronomers photograph nebulas and add colors to provide information about the nebula's composition.
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Sound Dampeners
Source Institutions
In this activity, learners will experiment with water- and air-filled balloons as a way of dampening sound before it reaches their ears.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-930.jpg?itok=-ZgwZhsE)
DIY Pasta Rover
Source Institutions
In this activity, learners design and build a NASA rover using raw pasta and candy with a limited imaginary budget.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-098.jpg?itok=t77RTqzN)
Shaving Cream Marbling
Source Institutions
In this activity, learners will create beautiful greeting cards by marbling with shaving cream and food dye. They will explore the chemistry behind the art of marbling.
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Extruding
Source Institutions
This activity was designed for blind learners, but all types of learners can explore the process of extrusion used to produce pipes and wires in industry.
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Evolutionstechnik or Selection and Variation in the Egyptian Origami Bird (Avis papyrus)
Source Institutions
In order to examine the random nature of mutations and natural selection, learners "breed" clutches of Egyptian Origami Birds (Avis papyrus) using random number generators (dice and coins) to mutate s
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Building Bridges
Source Institutions
In this activity, learners explore the engineering design process and the basic mechanics behind building bridges as they build one themselves using gumdrops and toothpicks.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-811.jpg?itok=Xrzk0LA8)
Marshmallow Catapult
Source Institutions
In this activity, learners explore physics by building a catapult that launches marshmallows with household objects.
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Self-Portrait Silhouettes: Activity 2
Source Institutions
In this activity, learners make a photographic image—without a camera!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-754.jpg?itok=D_babDUn)
Model the Sun and Earth
Source Institutions
In this activity, learners make scale models of the Sun and Earth out of paper mache.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-244.jpg?itok=_bdaHa4z)
Chemistry Is Colorful
Source Institutions
In "Chemistry is Colorful" learners explore different materials through paper chromatography.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-603.jpg?itok=sOOGhJ8Q)
Wandering Wands
Source Institutions
In this activity, learners construct wands that play different notes depending on information from light sensors programmed via a PICO Cricket.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-429.png?itok=r9frfe-V)
Crystal Packin' Mama
Source Institutions
In this activity, learners investigate the basic crystal structures that metal atoms form.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-270.jpg?itok=AvWDgOMJ)
Tube Zither
Source Institutions
In this activity, learners explore sound by constructing tube zithers, stringed instruments from Southeast Asia and the South Pacific.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-088.jpg?itok=XosCLObZ)
Watercolor
Source Institutions
In this activity, learners will use chemistry to create a night sky watercolor painting. They will experiment to learn the effects of mixing crayon, salt, and lemon juice with water color paints.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-066.jpg?itok=ehGmu8BU)
Trophy Triathlon
Source Institutions
In this activity, learners are challenged to design and construct a trophy for prize-winning sports equipment.
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Gymnast
Source Institutions
In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.