MeasurementMeasurement

Must have a standard.Must have a standard.A A standard standard is an exact quantity people is an exact quantity people

agree to use for comparison.agree to use for comparison.A standard means two people using the A standard means two people using the

same object should get close to the same same object should get close to the same results.results.

Standards of the pastStandards of the past

People used to use People used to use parts of their body to parts of their body to determine the length determine the length of something.of something.

The standard would The standard would be a part of the king’s be a part of the king’s anatomy.anatomy.

The standard yard The standard yard was the distance from was the distance from the king’s nose to his the king’s nose to his outstretched arm outstretched arm

People would use their feet to People would use their feet to measure distancemeasure distance

This is how the term This is how the term foot came about.foot came about.

Today the standard Today the standard “foot” in the English “foot” in the English system is system is

12 inches = 1 foot12 inches = 1 foot

The English system is very The English system is very confusing because it has so many confusing because it has so many

different valuesdifferent values

America is the only country that still America is the only country that still uses the old English systemuses the old English system

Scientists give the English system Scientists give the English system the thumbs downthe thumbs down

Scientists needed an exact and uniform Scientists needed an exact and uniform system of weights and measurementssystem of weights and measurements

How did the metric system come How did the metric system come about?about?

During the18th century During the18th century scientists measured the scientists measured the distance from the earth’s distance from the earth’s equator to its North Pole equator to its North Pole and divided it into ten and divided it into ten million parts.million parts.

This is how they came This is how they came up with the length of the up with the length of the standard meter.standard meter.

The MeterThe Meter

The standard for the meter is kept in a The standard for the meter is kept in a safe in France.safe in France.

The meter stick is a replica of that The meter stick is a replica of that standardstandard

A meter is made up of 100 centimeters A meter is made up of 100 centimeters and 1000 millimetersand 1000 millimeters

How the liter came aboutHow the liter came about

Scientists needed a way to measure Scientists needed a way to measure liquids so they took 10 cm and multiplied it liquids so they took 10 cm and multiplied it by its length x width x height to come up by its length x width x height to come up with a standard for measuring volumewith a standard for measuring volume

The liter is the size of 10 cm(3)The liter is the size of 10 cm(3)10cm x 10 cm x 10 cm10cm x 10 cm x 10 cmLength x Width x Height = VolumeLength x Width x Height = VolumeThe liter is used to measure liquidsThe liter is used to measure liquids

How the Gram came aboutHow the Gram came about

Scientists needed a Scientists needed a standard to measure standard to measure mass. mass.

Mass is the amount of Mass is the amount of matter in an objectmatter in an object

They decided to take They decided to take one cubic centimeter one cubic centimeter of water and call it a of water and call it a gram gram

The time standardThe time standard

During the 15During the 15thth century a scientist century a scientist named Galileo set the named Galileo set the standard of time standard of time known as the secondknown as the second

The MistakeThe Mistake

Two different groups of Two different groups of scientists were scientists were working on the working on the calculations to send a calculations to send a probe to Mars.probe to Mars.

The American team did The American team did their calculations in their calculations in the English standard the English standard and the other team and the other team did it in the metric did it in the metric system (OOPS!)system (OOPS!)

MARSMARS

This made scientists This made scientists very upset. very upset.

It cost the space It cost the space program 125 million program 125 million dollars dollars

It cost the scientists It cost the scientists their timetheir time

Metric chartMetric chart Kilo  means thousand (1000)Kilo  means thousand (1000)

Hecto means hundred (100)Hecto means hundred (100)

Deca means ten (10) Deca means ten (10)

Deci means one-tenth (1/10)Deci means one-tenth (1/10)

Centi means one-hundredth (1/100)Centi means one-hundredth (1/100)

Milli means one-thousandth (1/1000)Milli means one-thousandth (1/1000)

Copy This DownCopy This Down

The Meter- Measures lengthThe Meter- Measures lengthLength is the distance between two pointsLength is the distance between two pointsThe Liter –Measures VolumeThe Liter –Measures VolumeVolume is how much space a liquid takes Volume is how much space a liquid takes

upupThe Gram- Measures massThe Gram- Measures massMass is how much matter is in an objectMass is how much matter is in an object

Metric chartMetric chart

How to use the metric chartHow to use the metric chartRewrite the problemRewrite the problemCheck for the decimalCheck for the decimal (if no decimal, put at (if no decimal, put at

end)end)Where do we start? Put pencil theirWhere do we start? Put pencil theirWere do we go to?Were do we go to?# of hopes and direction# of hopes and directionDo the same with decimalsDo the same with decimals

How the metric system worksHow the metric system works

kilo  hecto  deca     kilo  hecto  deca     UNIT UNIT    deci  centi  milli   deci  centi  milli   (meter, gram or liter)       (meter, gram or liter)   

•100cm = ___ m100cm = ___ m•100cm = 1.0 m100cm = 1.0 m•6.9mm = ___cm6.9mm = ___cm•6.9mm = .69 cm6.9mm = .69 cm