History of Measurements Mathematics Department Corpus Christi School

History of Measurements Mathematics Department Corpus Christi School

Are you familiar with these infrastructures? Copyright © 2012 Angelo Mark P. Walag

Measurement - Latin word, “mensura” and Greek word “metron” - Is the process of obtaining useful information about the size, weight, time, temperature and etc. Copyright © 2012 Angelo Mark P. Walag

Ancient Measurements Length Time Day – period between daylight and darkness Month – period from appearance of the full moon Copyright © 2012 Angelo Mark P. Walag

King Henry I of England 1200 A. D. - standardized the yard as the distance of his nose to the tip of his thumb Copyright © 2012 Angelo Mark P. Walag

King Edward II 14 th Century - standardized the inch as the length of three grains of barley when laid end to end Copyright © 2012 Angelo Mark P. Walag

King Edward VII 16 th Century - standardized the pound as the weight of 7000 dried grains of wheat Copyright © 2012 Angelo Mark P. Walag

English System - Yard, foot, inch, pound and other measure were adopted as standard units of measure in England its colonies Copyright © 2012 Angelo Mark P. Walag

Birth of Metric System 18 th Century, France - 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 Copyright © 2012 Angelo Mark P. Walag

Metrication - Reform movement to change the customary or ancient measurement to the modern metric system Copyright © 2012 Angelo Mark P. Walag

th 11 General Conference Weights and Measures - Designated the Metric System as the International System of Units (SI) Copyright © 2012 Angelo Mark P. Walag

Pres. Ferdinand Marcos - 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) Copyright © 2012 Angelo Mark P. Walag

The International System of Units (SI) Measured Quantity 1. Length 2. Mass 3. Time 4. Electric Current 5. Temperature 6. Amount of Substance 7. Luminous Substance Copyright © 2012 Angelo Mark P. Walag Unit of Measure Meter (m) Gram (g) Second (s) Ampere (A) Kelvin (K) Mole (mol) Candela (cd)

Quiz Instructions: Identify what is asked, write on your paper you corresponding answer. Copyright © 2012 Angelo Mark P. Walag

1. A reform movement that shifts from the use of customary or ancient measurement towards the modern metric system Copyright © 2012 Angelo Mark P. Walag

2. The SI unit of Temperature Copyright © 2012 Angelo Mark P. Walag

3. The process of obtaining quantitative information about different physical phenomena Copyright © 2012 Angelo Mark P. Walag

4. The birthplace of Metric System Copyright © 2012 Angelo Mark P. Walag

5. An English measure of length equivalent to 12 inches Copyright © 2012 Angelo Mark P. Walag

6. A primitive unit of length equivalent to a spand of the forearm Copyright © 2012 Angelo Mark P. Walag

7. The standard unit of Length Copyright © 2012 Angelo Mark P. Walag

8. The president who ussed PD 187 ordering the use of metric system in the Philippines Copyright © 2012 Angelo Mark P. Walag

9. The metric standard of mass Copyright © 2012 Angelo Mark P. Walag

10. The French Academy of Scientist recommended this system of measurement Copyright © 2012 Angelo Mark P. Walag

ASSIGNMENT (1/4) Research at least 10 Measuring Instruments Copyright © 2012 Angelo Mark P. Walag