WAY BACK WEDNESDAY! Catalyst – January (3 3 ), 2010 Grab a calculator on your way in! Please sit your completed homework on your desk.  Mr. McKnight wants.

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Presentation transcript:

WAY BACK WEDNESDAY! Catalyst – January (3 3 ), 2010 Grab a calculator on your way in! Please sit your completed homework on your desk.  Mr. McKnight wants to see if wearing a tie will make his students score better on tests. What is the IV, DV, and 3 constants he should keep?  How many nanometers are there in a meter?  How many grams are there in a dekagram?

Today’s Agenda  Catalyst  Homework Review  SPECIAL MESSAGE  Practice, Practice, Practice!  Exit Question HOMEWORK TONIGHT – DIM AN. UNIT TEST ON FRIDAY!

Today’s Objectives  SWBAT master dimensional analysis.

Convert it like it’s really hot Let’s get this stuff even better with MORE practice and a better Understanding of units

SPECIAL GUEST WHO COULDN’T MAKE IT TODAY  SNOOP HAS A MESSAGE FOR YOU! SNOOP HAS A MESSAGE FOR YOU!

Working on the Railroad  Step 1:  What to what?  Step 2:  Write conversion factor(s)  Step 3:  Train tracks

HW – How do we do that?  We have to understand prefixes even better! BIGGEST BIGGER BIG tiny tinier tiniest G M k h d c d m n m i e i e e e e i a i g g l c k n c l n c a a o t a t i l o r o I I o

Length - Meters  Creepy Math Guy found a ruler! SWEEET!SWEEET!

Volume - Liters << 1 mL1 kL1 L

Mass - Grams << 1 mg1 kg1 g.

Length - Meters << 1 mm 1 km 1 m.

Always remember…  Key Point #1: In two step problems, always convert to the unit without a prefix first.  Mass: grams  Distance: meters  Volume: liters

Practice…  Chris Paul has a mass of 79.4 kg, convert this to mg.  *Bonus: If a standard basketball has a mass of 620, 000 mg, how many basketballs would equal the mass of Chris Paul?

Practice  There are 1135 decaliters (daL) in a pool. Convert to centiliters (cL).  10 L = 1 daL  100 cL = 1 L

Practice!  The average human eye blink is 300 milliseconds. Convert this to hectoseconds.

Practice How many deciliters are in 4 liters?

Practice How many grams are in a kilogram?

Practice How many micrometers are in a meter?

Practice How many milligrams are in a gram?

Practice How many meters are in a dekameter?

Practice How many liters are in a gigaliter?

Practice How many centigrams are in a gram?

Practice How many meters are in a megameter?

Exit Question  If the mass of a normal goat is about 77 kilograms, convert this to decigrams. Remember figure out those conversion factors and memorize those prefixes!