Measurement
Every Measurement Consists of
two things
A number
● A unit of measure
●
Standards
A standard is: something set up and
established by authority as a rule for the
measure of quantity, weight, extent, value, or
quality
●Example:The CHARLIE Stick
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The room is _________Charlies by
_________Charlies
Floor covering Activity
The school board would like to replace the
flooring in the room with nonslip tiling
●The cost of flooring is $20 per square meter
●
1. Form your construction company name
2. Measure the room and come up with an
estimate for the cost of materials
Precision and Accuracy
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Precision
●
Accuracy
●
Examples:
Precision and Accuracy
Precision: The ability of a measurement to be
consistently reproduced
●Accuracy
●Examples:
●
Precision and Accuracy
Precision: The ability of a measurement to be
consistently reproduced
●Accuracy: The ability of a measurement to
match the actual value of the quantity being
measured
●Examples:
●
Precision and Accuracy
Precision: The ability of a measurement to be
consistently reproduced
●Accuracy: The ability of a measurement to
match the actual value of the quantity being
measured
●Examples:
●
Precision and Acuracy
Precision and Acuracy
Scientific notation
Base Ten
●ones place decimal point
●Scientific notation
●
1000; 1999; 207,780; 0.078; 698; 1,400,000
Diameter of solar system 143,730,000,000 Km
Diameter of Carbon Atom 0.000 000 000 154 m
Powers of ten video
Significant Numbers
Distance
Standard unit:
●measuring instruments
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metric stick
roller
ruler
tape
caliper
Area - Student Planner page
Mass
Standard unit:
●measuring instruments
●
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balance
electronic scale
Volume
Standard unit:
●measuring
●
●
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calculation (Student Planner page)
volume displacement
fluid
Cubic decimeter - make a cubic
decimeter
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Prefixes and conversions
(conversion worksheet and meter stick
activity)
Micro (µ)
Prefixes and conversions
(conversion worksheet and meter stick
activity)
109
106
103
102
101
Micro (µ)
10-1
10-2
10-3
10-6
10-9
Conversions within metrics
Conversions within metrics
0.001
0.01
0.001
0.0001
0.00001 0.0001
0.000001 0.00001
0.01
0.0002
0.1
0.002
0.2
0.00034
0.0034
10
0.1
0.01
0.001
0.0001
0.1
0.01
0.001
10
20
0.02
200
0.034
0.34
0.02
0.1
0.01
100
2000
3.4
100
10
0.1
1000
20
20000
1000
100
10
10000
200
200000
340
Relationship between distance,
volume, and mass
1 cm3 = 1 mL
1 mL of water = 1 g
Compare cm3, Dcm3, m3
Converting between systems
●
equality/conversion factor method
●
an equality is:
●
a conversion factor is:
Conversions in student planner
1 inch = 2.54 cm
(1inch/2.54 cm, 2.54 cm/1 inch)
12in *2.54cm/in = 30.48cm
●
Converting between systems
●
equality/conversion factor method
●
●
an equality is: a state in which two things or values
are always equal
a conversion factor is:
Conversions in student planner
1 inch = 2.54 cm
(1inch/2.54 cm , 2.54 cm/1 inch)
12in *2.54cm/in = 30.48cm
●
Converting between systems
equality/conversion factor method
●
an equality is: a state in which two things or values
are always equal
● a conversion factor is: The ratio of a measurement
in one unit to the equivalent numerical value in
another unit
Conversions in student planner
1 inch = 2.54 cm
(1inch/2.54 cm , 2.54 cm/1 inch)
12in *2.54cm/in = 30.48cm
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