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Fan Cart
Source Institutions
If a sailboat is stranded because there is no wind, is it possible to set up a fan on deck and blow wind into the sail to make the boat move?
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Catapult
Source Institutions
In this activity, learners construct their own small catapults using simple materials. Learners follow visual instructions to build their launching device.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-365.png?itok=0PxPh41Q)
How to View a Solar Eclipse
Source Institutions
This is an activity to do when there is a solar eclipse!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-490.jpg?itok=LCNHN7dm)
Straws and Pins
Source Institutions
In this activity, learners build bridges and cantilevers in a series of "building out" challenges with straws and pins.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-560.png?itok=NLTrfnsX)
Exploring Tessellations (Grades 3-5)
Source Institutions
In this activity, learners repeat patterns in two and three dimensions to create tessellations.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-495.jpg?itok=H-zzGzBD)
Cylinders and Scale
Source Institutions
In this activity, learners investigate the relative growth of lengths, areas, and volumes as cylinders are scaled up.
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Copper Caper
Source Institutions
In this activity, learners conduct an oxidation experiment that turns old pennies bright and shiny. Learners soak 20 dull, dirty pennies in a bowl of salt and vinegar for five minutes.
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Crystal Creations: Grow Spikes of Crystals in the Sun
Source Institutions
This activity shows you how to make amazing crystal spikes using Epsom salt and the sun.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-221.png?itok=6kbVkTas)
Wind Tubes
Source Institutions
In this activity, learners create and experiment with wind tubes. These tubes are a playful and inventive way to explore the effect that moving air has on objects.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-377.jpg?itok=gIi6C9Is)
Cardboard Automata
Source Institutions
Cardboard Automata are a playful way to explore simple machine elements while creating a mechanical sculpture.