Science. Planner. 3/14/17 WALT: Quiz and Correct Science Planner 3/14/17 WALT: Quiz and Correct If time permits begin Igneous rocks. WU: If you are 15 years old and the Earth is 4,500,000,000 years old, then what fraction of the history of the Earth have you been alive? CW: Quiz and Correct

What does 10-5 mean on my calculator????? Or e-5

Science. Planner. 3/14/17 WALT: Quiz and Correct Science Planner 3/14/17 WALT: Quiz and Correct If time permits begin Igneous rocks. WU: If you are 15 years old and the Earth is 4,500,000,000 years old, then what fraction of the history of the Earth have you been alive? CW: Quiz and Correct