history of measurements mathematics department corpus christi school

History of Measuremen

tsMathematics Department

Corpus Christi School

Copyright © 2012 Angelo Mark P. Walag

Are you familiar with these

infrastructures?

- Latin word, “mensura” and Greek word “metron”

- Is the process of obtaining useful information about the size, weight, time, temperature and etc.

Measurement

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Length

Ancient Measurements

TimeDay – period between daylight and

darknessMonth – period from appearance of

the full moon

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Copyright © 2012 Angelo Mark P. Walag

- standardized the yard as the distance of his nose to the tip of his thumb

King Henry I of England1200 A.D.

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King Edward II 14th Century

- standardized the inch as the length of three grains of barley when laid end to end

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King Edward VII 16th Century

- standardized the pound as the weight of 7000 dried grains of wheat

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- Yard, foot, inch, pound and other measure were adopted as standard units of measure in England and its colonies

English System

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- The French Academy of Science formed a committee of scientists led by Joseph – Louis Lagrange (1736 – 1813)

- Developed the standard system of weights and measure

- Recommended the Metric System

Birth of Metric System

18th Century, France

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- Reform movement to change the customary or ancient measurement to

the modern metric system

Metrication

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- Designated the Metric System as the International System of Units (SI)

11th General Conference Weights

and Measures

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- Issued Presidential Decree 187 declaring the use of

metric system only as the standard measurement in the

Philippines- Ammended by the Batas Pambansa bilang 8 (Jan. 1,

1983)

Pres. Ferdinand Marcos

Measured Quantity

Unit of Measure

1. Length Meter (m)

2. Mass Gram (g)

3. Time Second (s)

4. Electric Current Ampere (A)

5. Temperature Kelvin (K)

6. Amount of Substance

Mole (mol)

7. Luminous Substance

Candela (cd)

The International System of Units (SI)

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Copyright © 2012 Angelo Mark P. Walag

Instructions: Identify what is asked, write on your paper you corresponding answer.

Quiz

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1. A reform movement that shifts from the use of customary or ancient measurement towards

the modern metric system

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2. The SI unit of Temperature

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3. The process of obtaining quantitative

information about different physical

phenomena

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4. The birthplace of Metric System

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5. An English measure of length equivalent to

12inches

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6. A primitive unit of length equivalent to a spand of the forearm

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7. The standard unit of Length

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8. The president who ussed PD 187 ordering

the use of metric system in the

Philippines

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9. The metric standard of mass

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10. The French Academy of Scientist recommended this

system of measurement

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Research at least 10 Measuring

Instruments

ASSIGNMENT (1/4)