# conversion factor

```Measurement
Every Measurement Consists of
two things
___________________
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Standards
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A standard is:
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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
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1. Form your construction companies name
2. Measure the room and come up with an
estimate for the cost of materials
Precision and Accuracy
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Precision:
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Accuracy:
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Examples:
Precision and Acuracy
Precision and Acuracy
Scientific notation
Base Ten
●ones place decimal point
●Scientific notation
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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
Significant Numbers are digits up to and
including the first uncertain digit.
• 1.15mL implies 1.15 &plusmn; 0.01 mL
Counting significant numbers
• Convert to scientific notation
• Disappearing zeros just hold the decimal point –
they are not significant
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
Micro (&micro;)
Conversions within metrics
Relationship between distance,
volume, and mass
1 cm3 = 1mL
1 mL of water = 1 g
Compare cm3, Dcm3, m3
Converting between systems
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equality/conversion factor method
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an equality is:
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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
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