8/16 Flipping Friday

GQ......
1.  How do we determine when an era begins/ends?
2.  Which is bigger an Eon or an Era?
3.  In which Era do we live? 
4.  Which Era is known as "Old Life"?  What types of animals dominated this Era?

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Daily Agenda
Math in Science
Scientific Notation
Clock of Eras

Learning Targets
1.  Construct a scientific explanation how  the  geologic time scale is used to organize the Earth's history. 
2.  
Investigate the history of the Earth through fossil and rock strata.