1. History of Measurements
Mathematics Department
Corpus Christi School

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

3. 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

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

5. 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

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

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

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

9. Birth of Metric System 18th 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

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

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

12. Ammended by the Batas Pambansa bilang 8 (Jan. 1, 1983)
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

13. The International System of Units (SI)
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)
Copyright © 2012 Angelo Mark P. Walag

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

15. 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

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

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

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

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

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

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

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

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

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

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