1. The Metric System

2. The Metric System
Common standard units are necessary for universal understanding
Ancient measurement were based on parts of the body or objects like grain. (Not very reliable)

3. The Metric System
Example: you can measure with yards, meters, or arm spans-but unless everyone uses the same measurements, each result will differ
The International System of Units (SI) developed so that all scientists can share & compare their observations and results (metric)

4. SI units (metric system) are based on the number 10
Makes conversions from one unit to another easier

5. Length: How long something is
Metric System
Length: How long something is

6. Length: How long something is
Metric System
Length: How long something is
Volume: the size of a region in a three-dimensional space

7. Metric System Length: How long something is
Volume: the size of a region in a three-dimensional space
Area: the size of an object’s surface

8. Metric System Length: How long something is
Volume: the size of a region in a three-dimensional space
Area: the size of an object’s surface
Mass: the amount of matter in an object

9. Metric System Length: How long something is
Volume: the size of a region in a three-dimensional space
Area: the size of an object’s surface
Mass: the amount of matter in an object
Temperature: how hot or cold something is

10. Metric System
Basic Units Length = meter (m) Mass = gram (g) Volume = liter (L)

11. kilo hecto deka BASE deci centi milli
We add prefixes to these basic units to measure very large or very small quantities
kilo hecto deka BASE deci centi milli
King Hector’s dog, Benji, drinks chocolate milk
meter
liter
gram

12. k h da base d c m Example: 200 meters = ________ millimeters
To convert from one unit to another, move the decimal point the number of spaces and direction indicated

13. You move the decimal point __3___ places to the _right_
k h da base d c m
Example:
200 meters = _200,000_ millimeters
You move the decimal point __3___ places to the _right_

14. You move the decimal point _____ spaces to the _____
k h da base d c m
Example:
.0325 cm = ________ km
You move the decimal point _____ spaces to the _____

15. You move the decimal point __5___ spaces to the _left____
k h da base d c m
Example:
.0325 cm = _ _ km
You move the decimal point __5___ spaces to the _left____

16. You move the decimal point ______ places to the ______
k h da base d c m
Example:
4897 cm = ___________ m
You move the decimal point ______ places to the ______

17. You move the decimal point __2____ places to the __left____
k h da base d c m
Example:
4897 cm = ___48.97__ m
You move the decimal point __2____ places to the __left____

18. k h da base d c m
Classroom clips (5min) on the metric and standard systems
Classroomclips.org/video/1444

19. k h da base d c m
Divide into groups of 4-5 and work through the following problems TOGETHER
HELP one another!

20. k h da base d c m 2.2 hl = ____kl 540.80 mm =__ cm
.739 cm = __ m dag = ___dg
m = _ mm l = ____cl
46 km = ____m cm = ____km

21. answers
2.2 hl = .22 kl mm =54.08 cm
.739 cm = m dag = 27dg
m = 89,025 mm l = 60,000cl
46 km = 46,000m cm = km