2.  “Systeme International”  Base 10 System  Works for all units of measurement  length, volume, time, and mass

3.  The Standard or English System is what you are used to using in the US … MOST other countries use METRIC!  Length = Inch or Foot  Volume = Cup, ounce, gallon  Time = Second  Mass = Pound

4.  The Metric system is used for ALL sciences.  Length = Meter (m)  Volume = Liter (L)  Time = Second (s)  Mass = Gram (g)

5.  Metric  10 millimeters = 1 centimeter  10 centimeters = 1 decimeter  10 decimeters = 1 meter  10 meters = 1 dekameter  10 dekameters = 1 hectameter  10 hectameters = 1 kilometer  English  12 inches = 1 foot  3 feet = 1 yard  5.5 yards = 1 rod  320 rods = 1 mile  5280 feet = 1 mile

6.  Base 10 allows scientists to easily change units to make numbers more manageable  How many days old are you?  Easier to use years huh…

7.  Science is all about combining observations into big ideas  Sometimes we describe ▪ Dogs are larger than mice  Sometimes we take measurments ▪ The average height of a dog is 0.56 m  Those Observations must be PRECISE AND ACCURATE

9.  ACCURATE  As close to the known value as possible  PRECISE  Every measurement is of the same thing is close to one another

12. 1 cm = 0.01 m 1 cm = 10 mm

13.  1.2hL  dL  3 steps down to the right  = 1200 dL  340.2cg  kg  5 steps up to the left  0.003 402 kg