Selected Labs and Activities -- Earth History
"A Model of Radioactive Decay" ("Penny Lab)
"Dox Rox Time Travel" Project (Geologic Time Scale)
From New York Science Teacher: Earth History and Geologic Time
From Charles Burrows (East Ramapo CSD):
Earth's History
For additional suggestions, use the Digital Library for Earth System Education www.dlese.org 
"Natural Selection of the Easter Bunny" (Mark Heilbrun, Prep Academy for Writers)
 
"Varve Dating: Dating Sedimentary Strata"
 
Notes: 
1. These selected labs and activities have been created by different teachers, so the formats of the materials will differ. 
2. Suggestions for additional labs and activities should be sent to <michael@earth2class.org>