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Avalanche
Source Institutions
In this geology activity, learners create a model using a mixture of salt and sand inside a CD case. When the case is tilted or inverted, the mixture dramatically sorts into a layered pattern.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-874.jpg?itok=A5T4J5Ux)
Don't Crack Humpty
Source Institutions
Groups of learners are provided with a generic car base and an egg. Their mission: design a device/enclosure to protect the egg on or in the car as it rolls down a ramp with increasing slopes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-275.jpg?itok=3UvJQYzJ)
Magnetic Marble Run
Source Institutions
Learners explore magnetism and motion as they build a simple marble run. Learners test different arrangements of plastic and cardboard tubes, bottles, and cups on a magnetic board.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-147.jpg?itok=w0mmWqxK)
Foam Rocket
Source Institutions
In this activity, learners work in teams build and launch rubberband-powered foam rockets.