1. Wednesday, 08/27/14 TEKs: P.2G: Make measurements with accuracy and precision and record data using scientific notation and SI units By the end of today SWBAT: Perform calculations with scientific notation Essential Question: How do I multiply and divide numbers using scientific notation? Topic: Scientific Notation

2. Intro to New Material Expectations:  Only talk when called upon  Raise your hand if you have a question or answer  Take notes as directed  Make class work for you!

3. Find the trend… (2 x 10 3 )(3 x 10 2 ) = 6.0 x 10 5 (1 x 10 5 )(7 x 10 -3 ) = 7 x 10 2 (4 x 10 6 )(8 x 10 4 ) = 3.2 x 10 12 Talk it out with your elbow partner – what is the pattern here?

4. Multiplying Scientific Notation Rules:  MULTIPLY the numbers  ADD the exponents (3.2 x 10 3 )(2.0 x 10 5 ) = 6.4 x 10 8

5. Find the trend… 8 x 10 6 = 2 x 10 4 4 x 10 2 9 x 10 5 = 3 x 10 9 3 x 10 -4 1.8 x 10 -3 = 2 x 10 -11 9 x 10 7 Talk it out with your elbow partner – what is the pattern here?

6. Dividing Scientific Notation Rules  DIVIDE the numbers  SUBTRACT the exponents 8 x 10 5 = 4 x 10 2 2 x 10 3

7. Quick Checks  When multiplying numbers in scientific notation, what do you do to the numbers?  What do you do to the exponents?  When dividing numbers in scientific notation, what do you do to the numbers?  What do you do to the exponents?

8. Dry Erase! Expectations:  Every person participates  Raise your hand if you have a question  Focused on physics  If you are not at the board, please complete the problems on your C- note sheet.