Search Results
Showing results 1 to 4 of 4
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-474.png?itok=ZiX0AnNf)
Digging Into the Past
Source Institutions
This activity (on pages 23-27) lets learners simulate the work of scientists who take core samples of Earth's rocky layers to determine geological history.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-323.jpg?itok=Eq5NsG0G)
Invent a Plant
Source Institutions
In this activity, learners construct models of plants that are adapted to living under specific environmental conditions.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-953.gif?itok=PXODLPi7)
How Greenhouse Gases Absorb Heat
Source Institutions
Learners observe two model atmospheres -- one with normal atmospheric composition and another with an elevated concentration of carbon dioxide.
![](/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.