1. Please take out: A notebook and writing utensil Your blue formula sheet A calculator Convert 57cm 2 to m 2 Convert 1.65km 3 to m 3 Kickoff:

2. Metric Conversions & Dimensional Analysis

3. Brainstorm 3 advantages of the metric system. Based on units of 10 Easy to convert No fractions Prefixes allow you to express any size measurement Standards are well defined International

4. Any disadvantages of the metric system? American’s aren’t used to it – its not part of their daily life. NOTE: The official international system is called the “SI” or “System International”

5. A few official SI units Meters – length Kilograms – mass Liters -- Volume Seconds – time Moles – amount of substance Ampere – electric current

6. Metric prefixes Giga – 10 9 Mega – 10 6 Kilo – 10 3 Hecto – 10 2 Deka - 10 1 Deci – 10 -1 Centi – 10 -2 Milli – 10 -3 Micro – 10 -6 Nano – 10 -9 There are others….

7. Kilo Hecto Deka meter, gram, Liter Deci Centi Milli Decimal Decimal moves Left moves Right

8. One more.. Convert 252cm 3 to L.

9. Converting units Dimensional Analysis… Set up the problem. Find the correct conversion factor. Create a fraction that cancels the given unit and brings you closer to the new unit.

10. Converting complex units Easiest to use dimensional analysis – cancel one part at a time until you have converted all parts.

11. Practice Convert 5km to miles 125lbs to kg

12. Practice Convert 72 mi/hr to m/s. Convert 275,000sec to days.