Mod-4-Perform-Mensuration-Calculation.pptx

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1. PERFORM MENSURATION & CALCULATION Presented by: Riza Quider Bedayo

2. OBJECTIVES At the end of the lesson, you are expected to do the following: Select proper measuring instruments; and Carry out measurement and calculations.

3. DEFINITION OF TERMS Area Extent of part of a surface enclosed within a boundary Calculation The act or process of/or result of calculating Circumference Distance around the circle Classification Group or category within an organized system Decimal Number expressed in a counting system that uses units of 10, especially a decimal fraction Dimension Measurable extent such as length, thickness and width Fraction Number expressed as a quotient of two other numbers

4. DEFINITION OF TERMS Geometric Shapes Characterized by straight line, regular curves and angles Graduation Scale of a measuring tool Mensuration Act or art of measuring Perimeter Bounding line or curve of a plain area Standard Serves as a measure of reference Stock Refers to a lumber of a certain furniture job Substrate Wood to be cut in a cutting machine Volume Space inside a solid figure

5. SELECTING TOOLS AND INSTRUMENTS FOR MEASURING STANDARDS Measuring tools are selected/identified as per object to be measured or job requirements. Correct specifications are obtained from relevant sources Measuring instruments are selected according to job requirements Alternative measuring tools are used without sacrificing cost and quality of work. Measurements are obtained according to job requirements

6. WHAT ARE THE FOLLOWING MEASURING TOOLS? Take a short recall of measuring tools that you already know.

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15. 9.

16. 1. Push Pull Rule

17. 2. Folded or Zigzag Rule

18. 3. Ruler

19. 4. Caliper

20. 5. Try Square

21. 6. Meter Stick

22. 7. Divider

23. 8. Compass

24. 9. Protractor

25. SYSTEMS OF MEASUREMENTS ENGLISH SYSTEM & SYSTÉME INTERNATIONAL (S.I.) The two (2) systems of measurements are: the English and the Metric System. English system originated in England also known as the U.S. customary system of measurement while the Metric System was developed in France and also known as the S.I. (International Standard) LINEAR MEASUREMENT ENGLISH METRIC Yard (yd) Meter (mts) Foot (ft) or (‘) Decimeter (1/10 mts) Inch (in) or (“) Centimeter (1/100 mts) Millimeter (1/1000 mts)

26. CARRY OUT MEASUREMENT AND CALCULATIONS Materials / Resources you will need in carrying-out measurement and calculations: Actual Objects to be measured Measuring Tools Record Book Pencil

27. READING OF MEASUREMENTS: READING THE “INCH” The inch is divided into segments called “graduations”. Each graduation represents a measurement in form of a proper fraction. The inch can be divided into 16, 8, 4, and 2, equal parts. illustration is not actual length of “Inch”

28. READING OF MEASUREMENTS: READING THE “CENTIMETER” illustration is not actual length of “Inch”

29. EXERCISE: CONVERTING FRACTION TO DECIMAL  

30. EXERCISE: (ANSWER) CONVERTING FRACTION TO DECIMAL  

31. CARRY OUT MEASUREMENT AND CALCULATIONS: CONVERTING UNITS OF MEASURE GUIDE TABLE IN UNIT CONVERSION English to English 1 foot = 12 inches Metric to Metric 1 meter = 10 decimeter (dm) 1dm = 10 centimeter English to Metric 1 inch = 2.54 cm 1 inch = 25.4 mm 1 foot = 30.48 cm

32. CARRY OUT MEASUREMENT AND CALCULATIONS: CONVERTING UNITS OF MEASURE GUIDE TABLE IN UNIT CONVERSION Metric to English 1 meter = 3.28 feet 1 meter = 39.37 inches

33. Sample Solutions in Conversion: Foot to inches Inch to feet CARRY OUT MEASUREMENT AND CALCULATIONS: CONVERTING UNITS OF MEASURE

34. Sample Solutions in Conversion: Centimeter to millimeter Inch to centimeter CARRY OUT MEASUREMENT AND CALCULATIONS: CONVERTING UNITS OF MEASURE

35. S.I. units only CARRY OUT MEASUREMENT AND CALCULATIONS: CONVERTING UNITS OF MEASURE

36. Measure end to end of stock with a tool. Measure edge to edge with a tool. Measure outside diameter of a cylindrical object using a caliper. Measure inside diameter with a caliper. Lay-out width. TAKING DIMENSIONS: WAYS OF TAKING DIMENSIONS

37. Measure end to end of stock with a tool. TAKING DIMENSIONS: WAYS OF TAKING DIMENSIONS

38. Measure edge to edge with a tool. TAKING DIMENSIONS: WAYS OF TAKING DIMENSIONS

39. Measure outside diameter of a cylindrical object using a caliper. TAKING DIMENSIONS: WAYS OF TAKING DIMENSIONS

40. Measure inside diameter with a caliper. TAKING DIMENSIONS: WAYS OF TAKING DIMENSIONS

41. Lay-out width. TAKING DIMENSIONS: WAYS OF TAKING DIMENSIONS