1. Measurement Systems

2. EARLY SYSTEMS

3. Measurements are relative Foot = human foot Inch = 3 barley corns Yard = nose to outstretched fingertip Mile = 1,000 paces Gallon = simply the name for a pail

4. Even God needs measuerments Genesis 7 Cubit = elbow to tip of mid finger

5. Need for Consistency

6. The English System

7. Do you know our current system? How many inches in a foot? How many feet in a yard? How many feet in a mile? How many ounces in a cup? How many cups in pint? How many pints in a quart?

8. The English System cont. How many quarts in a gallon? How many cups in a gallon? How many ounces in a pound? How many pounds in a ton? How many mass ounces in a ton? Are fluid ounces and weight ounces the same? What is the abbreviation for a pound?

9. CONFUSED????

10. Need for simplicity Metric system “BORN” August 1, 1793 in France

11. THE METRIC SYSTEM First legal to use in the USA in 1866 International acceptance by 1875 Britain mandates use in 1965 Canada in 1970 Today only major country in the world that does not legally require its use is ……..

12. THE U.S.A.

13. ONLY 3 BASIC UNITS: MASS (WEIGHT) = GRAM VOLUME = LITER DISTANCE = METER

14. PREFIXES KILO = 1,000 HECTO = 100 DECA = 10 MEGA = MILLION DECI =.1 (1/10) CENTI =.01 (1/100) MILLI =.001 (1/1000) MICRO = one millionth NANO = one billionth

15. English to Metric conversions 1 gallon = 3.78 liters 1 pound = 453 grams 1 inch = 2.54 centimeters 1 foot =.3048 meters 1 yard =.91 meters 1 mile = 1, 609 meters

16. Only need to know APPROXIMATES

17. Visualize : 1 gram = weight of a small paperclip 5 gram = weight of a nickel 1 kg = 2.2 lbs = approx. weight of textbook 1 mg = weight of a piece of dust

18. Visualize : 1 m = length of a baseball bat, golf club, etc… 1 mm = thickness of an ID card 1 cm = width of little finger / pencil 1 km = 5 city blocks (8 blocks = 1 mile) 1 ml = single drop of liquid / teardrop

19. Metric to metric CONVERSIONS State the relationship and then determine direction to move decimal point Exp kg to g would be 1000 to 1 move to the right THUS: 12kg equals 12000 grams and 12000g equals 12kg

20. DIRECTION If larger to smaller unit move decimal to right If smaller unit to larger unit move to left