1. AKA: System Internationale (SI)

2. History  Metric system or System Internationale (SI) was developed in order to have standardized measurements As communication and travel increased, the need for standardization increased (shipping)

3. Length  Distance from one point to another point  Basic unit is a METER (m)  We also use Kilometer (Km), centimeter (cm) and millimeter (mm)  Measure with a ruler or tape measure

4. Length Approximations  Kilometer (Km) = 1,000 meters About the distance from bike rack at LSMS to baseball field at Centennial  Meter (m) About the distance from the floor to a door handle  Centimeter (cm) = 1/100 of a meter About the width of your pinky  Millimeter (mm) = 1/1,000 of a meter About the thickness of a dime

5. Volume  Amount of space an object takes up  Basic unit is a Liter (L)  We also use milliliter (mL) and Cubic centimeter (cm 3 )  mL = cm 3  Measure with a ruler and math or graduated cylinder (meniscus)

6. Volume Approximations  Liter (L) About the volume of a Nalgene water bottle  Milliliter and Cubic Centimeter = 1/1,000 of a Liter About one drop from a medicine dropper

7. Mass  Amount of matter in an object  Basic unit is a Gram (g)  We also use Kilogram (Kg)  Measured with a scale or balance

8. Mass Approximations  Gram (g) About the weight of a paper clip  Kilogram (Kg) = 1,000 grams About the weight of a Harry Potter book (hard back)

9. PrefixMeaning Kilo (K)1,000 Hecto (H)100 Deca (D)10 Base Unit (m, l, g)1 deci (d)0.1 centi (c)0.01 milli (m)0.001