*Trivia- how many countries in the world DON’T use the metric system?? T. Trimpe 2008 http://sciencespot.net/

Metrics= All based on factor of 10! King Henry Doesn't [Usually] Drink Chocolate Milk kilo-   hecto-   deka-  [base unit] deci-   centi-  milli-

3 Main Categories of Measurement What Are You Measuring? Base Unit Length (or height or width) Meter Mass Gram Volume Liter

How many jumps does it take? Ladder Method 1 2 3 KILO 1000 Units HECTO 100 Units DEKA 10 Units deci 0.1 Unit Meters Liters Grams centi 0.01 Unit milli 0.001 Unit How do you use the “ladder” method? 1st – Determine your starting point. 2nd – Count the “jumps” to your ending point. 3rd – Move the decimal the same number of jumps in the same direction. 4 km = _________ m Starting Point Ending Point How many jumps does it take? 4. 1 __. 2 __. 3 __. = 4000 m

Conversion Practice Try these conversions using the ladder method. 1000 mg = _______ g 1 L = _______ mL 160 cm = _______ mm 14 km = _______ m 109 g = _______ kg 250 m = _______ km Compare using <, >, or =. 56 cm 6 m 7 g 698 mg

Always include the correct unit! 7g 1,898 km 33 L *No NAKED Numbers!! Always include the correct unit! 7g 1,898 km 33 L *Point deductions if you forget 

PRACTICE makes PROGRESS Work on 4L- you may quietly check your answers with your seat partner when finished. Then, come up to the front table and pick up your HW. Start working on it!