Curriculum Outcomes
Measurement: Develop spatial sense and proportional reasoning.
1. Solve problems that involve linear measurement, using:
Measurement: Develop spatial sense and proportional reasoning.
1. Solve problems that involve linear measurement, using:
- SI and imperial units of measure
- estimation strategies
- measurement strategies. [ME, PS, V]
Things You Need to Know
- The Systeme Internationale (SI), also known as the metric system, is the primary system of measurement around the world.
- These units work off a system where each unit has a root (indicating what the unit is measuring) and a prefix (indicating the magnitude/size of the unit).
- Roots: meter (m), gram (g), liter (L), etc.
- Prefixes: milli- (m), centi- (c), kilo- (k), etc.
- Example: meter (m), kilometer (km), millimeter (mm), etc.
- You will need to memorize these conversion factors:
- 1 m = 100 cm
- 1 m = 1000 mm
- 1 km = 1000 m
- The Imperial system is a system that used to be widely used, but is now only the official measurement system in three countries: USA, Liberia, and Myanmar.
- These units are seemingly random; you just need to know what each unit is used for.
- Examples: inches, feet, yards, miles (these all measure length)
- To convert within units, you need to use conversion factors. Conversion factors are a statement of equality between 1 of one unit and the conversion factor amount of the other unit.
- Example: 1 foot = 12 inches
- To convert feet to inches, multiply by 12.
- To convert inches to feet, divide by 12.
- You can convert between systems using conversion factors as well.
- Example: 1 in = 2.54 cm
- To convert inches to cm, multiply by 2.54.
- To convert cm to inches, divide by 2.54.
Interactive Activities
Sample Problems
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Class Notes