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Shrinkers
Source Institutions
Visitors use heat to shrink samples of polystyrene. They compare samples from containers that were shaped in different ways during manufacturing.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-697.jpg?itok=vGEvmj1m)
Digger
Source Institutions
In this activity, learners build their own construction cranes using tongue depressors and pushpins.
Concentrate: Concentrations and Reaction Rates
Source Institutions
Visitors incrementally increase the amount of iodate in three different test tubes containing the same amount of a starch solution.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-553.png?itok=QhpvVy18)
Glitter Slime
Source Institutions
Our bodies defend themselves in many different ways to prevent us from getting sick.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-078.png?itok=KMPw9LPT)
Sound Off!
Source Institutions
This activity includes several games about animal sounds. Using their sense of hearing and communicating with various kinds of noisemakers, learners role-play predator and prey.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-897.jpg?itok=sK-rUM3g)
Density Rainbows
Source Institutions
In this activity, learners explore the concept of density by pouring 5 different liquids into a jar. Food coloring is added if needed to give each liquid a distinct color.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-030.jpg?itok=NaN9W1rq)
Find the Best Way to Clean Oil off Bird Feathers
Source Institutions
In this experiment, learners examine the way oil affects bird feathers and test different cleanup methods to find out which works best.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-871.gif?itok=k0vKLOMS)
Atomic Mobile
Source Institutions
Learners make a mobile model of a carbon atom using clay, wire, and pipe cleaners.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-514.jpg?itok=LG69oaZm)
Growing Food From Scraps
Source Institutions
In this activity, learners will explore vegetative propagation while preparing food scraps to grow into plants.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-500.jpg?itok=MwYl4fAY)
Let's Make Music
Source Institutions
In this activity, learners will create their own percussion instrument with recycled materials. Learners will explore design, fabrication, cause and effect and sound through this activity.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-049.jpg?itok=RfKpRTvO)
Popsicle Bridge
Source Institutions
In this activity, learners explore how engineering has impacted the development of bridges over time, including innovative designs and the challenge of creating bridges that become landmarks for a cit
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-118.png?itok=lI6wdxwj)
A Model Nuclear Power Plant Steam Turbine
Source Institutions
In this activity (on pages 20-23 of PDF), learners build a model of a power plant using simple materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-409.jpg?itok=U_e5Hyki)
Secret Messages
Source Institutions
In this activity, learners use Teflon (PTFE) tape to write secret messages.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-878.jpg?itok=rCW8-jE0)
Polar Opposites
Source Institutions
In this activity, learners make a 3-D model of magnetic fields by inserting a small, strong magnet into a sphere.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-688.jpg?itok=cgEsPCBc)
Slide Whistle
Source Institutions
In this activity, learners build a slide whistle using PVC pipe, bamboo skewer, and piece of foam. Construction of the instrument is relatively simple.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-039.png?itok=-c5Wa_Hx)
Pop Can "Hero Engine"
Source Institutions
In this activity, learners build water-propelled engines from soft drink cans.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-510.png?itok=2QJ6-LL_)
Exploring Fabrication: Self-Assembly
Source Institutions
In this activity, learners participate in several full-body interactive games to model the process of self-assembly in nature and nanotechnology.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-949.jpg?itok=QBTKM4q2)
Roller Coasters
Source Institutions
In this design challenge, learners will create their own roller coaster using household objects for the track and a marble or small ball as their cart.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-020.png?itok=OCpzK8i7)
Milli's Insulation Investigation
Source Institutions
In this activity on page 2 of the PDF, learners test different materials to find out which is the best insulator.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-501.png?itok=RSYqG13v)
Double Replacement Micro-Reactions
Source Institutions
In this chemistry activity, learners use common chemicals to examine reactions that occur between two aqueous solutions.