Search Results
Showing results 1 to 3 of 3
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-884.jpg?itok=ZN4YC59g)
Cool It!
Source Institutions
Learners make a refrigerator that works without electricity. The pot-in-pot refrigerator works by evaporation: a layer of sand is placed between two terra cotta pots and thoroughly soaked with water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-530.jpg?itok=7oeZJrg8)
Paperfolding Polyhedrons
Source Institutions
In this activity (on pages 55-66 of PDF), learners fold paper into origami shapes and then combine several identical shapes into a three-dimensional structure.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-882.jpg?itok=-Vdf4WQM)
Mystery of the Disappearing Cottonwoods
Source Institutions
Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline.