1. S.I. The International System of Units
Why Earth and why hands?

2. What is S.I.? An international language of numbers.
All scientist and mathematicians from around the world use this method of recording data so that it is GLOBALY understood.
An easy way to measure that requires no conversions
Also known as the metric system

3. Who uses this? Rest of the world
Uses the S.I. system to measure length, liquids, and mass
Internationally understands the S.I. system
U.S.A. & Great Brittan
Use the British system of measurements
Not Internationally accepted

4. Why them and not us?
Because we used to be governed by the British (remember the pilgrims) we adapted many of their customs. When we formed our own country we kept many of their traditions including their way of measuring.
The British system of measuring has been used in this country for hundreds and hundreds of years. Where as the rest of the world moved on and found a more cohesive and globally accepted way of measuring. The United States and England did not.

5. What does it measure? S.I. Unit What it measures American Equivalent
Some pictures to help us remember
Meter
Length or distance
Yard, mile, feet, centimeters millimeters 
Liter
Volume of liquids and gases
Gallon, ½ gallon, pint, cup, teaspoon, tablespoon 
Grams
Mass
Pound and ounces 

6. Do you notice any similarities?
Meters
Measures the size of an object or the distance between to points.
For example:
My height is 5 feet or 1.52 meters
The length of a football field is 300 yards or 100 meters.
Do you notice any similarities?

7. Liters Measures how much liquid an object can hold. For Example:
In the United States there are many different ways of measuring liquid; cups, gallons, mints, ounces, etc.
The rest of the world only uses Liters.

8. Grams
Used to measure the weight of an object or how much mass that object takes up.
For example:
Let’s pretend that I weighed 100 pounds in the S.I. system I would weigh 45 Kilo grams
Instead of measuring ounces of sugar and then cups of sugar you can just measure grams of sugar.
It’s so easy, there are only three basic units all you have to remember is Meters, Liters, and Grams!

9. K.H.D.D.C.M. HENRY H M E D K I I N I L E R N K Y G C H D O R I N La KT E H E N R Y M I L K D I E D R I N K G K I N G

10. K.H.D.D.C.M. this is used with all three basic units
HENRY D E C A H E C T A C E N T I K I L O D E C I M I L

11. K.H.D.D.C.M.
Kilo 1000 Hecta 100 Deca 10 UNIT 1 Deci .10 Centi .010 Mili .0010

12. K.H.D.D.C.M. Lets come up with some examples

13. Lets Practice
See metric practice problems