This document outlines a lesson plan on area for a technical and livelihood exploratory course on shielded metal arc welding. It includes objectives to identify area formulas for basic shapes, compute areas, create 3D models, and emphasize using the correct formulas. Formulas are provided for the area of a cylinder, cube, rectangle, and triangle. A multiple choice quiz is given to review the key topics.

1. TLE EXPLORATORY
COURSE
-SMAW-
SHIELDED METAL ARC
WELDING
Subject Teacher: Maribel G. Madarimot

2. LET US ALL STAND

3. YOUR CATCHY
HEADLINE HERE
YOUR CATCHY DESCRIPTION HERE

4. ATTENDANCE
BOYS

5. ATTENDANCE
GIRLS

6. YOU ARE THE MOST SPECIAL
PART OF THE LEARNING PROCESS
TODAY!

7. OUR GOOD HOUSE:
1. Thank you for coming on time.
2. You are a team-worker today. Your full
cooperation is expected.
3. Sharing of ideas is much welcomed.

8. OUR GOOD HOUSE:
4. Note-taking is appreciated.
5. Saying excuse me, is a good practice.
6. Your cellphone is valuable, please switch it
off during this 1 hour session.

9. ASSIGNMENT:

12. # of students who submitted
assignments
MALE
21-7=14
FEMALE
16-11=5

13. RECALL

14. cm.-ft.

15. Can you show how to
convert cm to ft?
(cm.-ft.)

17. Kung ikaw ay isang hugis
anong klaseng hugis ka?
Bakit?

18. SHAPE IT OUT

19. SHAPE IT OUT
CONNECT ALL PIECES OF
PAPER FOR 20 SECONDS
ONLY

20. SHAPE IT OUT
FREE ICE SCRUMBLE

21. OBJECTIVES:
IDENTIFY THE
FORMULA USED IN
COMPUTING AREA OF A
CYLINDER, CUBE,
RECTANGLE &
TRIANGLE
1.

22. OBJECTIVES:
2. COMPUTE FOR THE
AREA OF A CYLINDER,
CUBE, RECTANGLE &
TRIANGLE

23. OBJECTIVES:
3. CREATE 3 DIMENSIONAL
SHAPES TO REPRESENT
THE AREA

24. OBJECTIVES:
4. VALUE THE
IMPORTANCE OF USING
CORRECT FORMULA IN
THE COMPUTATION OF
AREA.

25. TOPIC

26. TOPIC :
AREA

27. AREA
AREA IS THE NUMBER OF UNIT
SQUARES EQUAL TO THE
SURFACE OF AN OBJECT.

28. FOR EXAMPLE:
A STANDARD SIZE OF A PIECE OF PLYWOOD CONTAINS 32
SQUARE FEET (SQ. FT.).
BECAUSE IT MEASURES 4 FEET BY 8 FEET SO, 4 X 8 = 32
SQUARE FEET.

29. AREA IS EXPRESSED IN SQUARE INCHES, SQUARE FEET
AND OTHER UNITS OF MEASURE.
A SQUARE INCH MEASURE 1” X 1” OR EACH EQUIVALENT.
A SQUARE FOOT CONTAINS 144 SQUARE INCHES BY
MULTIPLYING 12” X 12” = 144 SQ. INCHES.
THE AREA OF ANY PLANE FIGURE CAN BE DETERMINED
BY APPLYING THE PROPER FORMULA.

31. AREA

32. FORMULA

33. FORMULA
RADIUS-IS A STRAIGHT LINE
EXTENDING FROM THE CENTER OF A
CIRCLE OR SPHERE TO THE CIRCUMFERENCE
OR SURFACE.
A=2ᴫr (r + h)

34. FORMULA

35. FORMULA
A=2(lw) + 2(wh) + 2(lh)
A=72 cm2

36. AREA

37. AREA

38. AREA

39. GROUP ACTIVITY

42. DISTRIBUTION
OF MATERIALS

44. BRIGHT
PERFECT
GIFTED
SMART
GROUP REPORT
1.
2.
3.
4.

45. POINTS

46. HISTORY OF CYLINDER
*225 BCE, ARCHIMEDES.
*MOST COMMON FIGURE USED IN REAL LIFE.
WATER BOTTLES, CANDLES, AND DEODORANT, CANS IN
REAL LIFE.

48. IMPORTANCE OF CYLINDER IN MEDICINE

49. HISTORY
THE TRIANGLE IS ONE OF THE EARLIEST KNOWN
GEOMETRIC SHAPES, WITH EVIDENCE OF ITS USE
DATING BACK TO ANCIENT MESOPOTAMIA (MODERN-
DAY IRAQ), OVER 5000 YEARS AGO. ITS NAME WAS
DERIVED FROM THE LATIN WORD ”TRIANGULUS,”
MEANING “THREE-CORNERED”.

50. HISTORY
5TH-CENTURY BC GREEK MATHEMATICIAN
PYTHAGORAS BEING THE FIRST TO DEDUCE
FACTS ABOUT RIGHT-ANGLED TRIANGLES
JUST DID NOT ADD UP. SOME BELIEVE LATER
COMMENTARIES INDICATE IT WAS THE
COLLABORATIVE WORK OF HIS FOLLOWERS,
THE PYTHAGOREANS.

53. THE SUM OF THE MEASURES OF
THE THREE ANGLES OF A
TRIANGLE IS ALWAYS 180∘.

54. IMPORTANCE:
1.It will give you the correct space for a surface area.
2.It can help you to compute the correct area.
LAND OWNER
BUILDING CONSTRUCTION
1.Engineers
2.Architects
3.Surveyor (DENR)
4. Welders

55. PRACTICAL APPLICATION

57. IMPORTANCE:
1.The planimeter is a drafting instrument used to measure
the area of a graphically represented planar region. The
region being measured may have any irregular shape
2.Architect-scale ruler,
3.Surveyor -theodolite, measuring tape, total station, 3D
scanners, GPS/GNSS, level and rod
4.Welders-
WITH THE HELP OF TOOLS:

58. REVIEW:
WHICH OF THE FOLLOWING FORMULA
BELOW IS USED TO COMPUTE THE AREA
OF CYLINDER?
1.
A. A=2ᴫR (H + R) B. A=2(LW) + 2(WH) + 2(LH)
C. A=6S2 D. A=1/2 BH

59. REVIEW:
WHAT COULD BE THE AREA OF A
TRIANGLE WITH A HEIGHT OF 6
INCHES AND A BASE OF 4
INCHES? A=1/2 BH
A=1/2 (4 IN. X 6 IN.)
A=1/2 X 24 IN. 2
A=48 IN. 2

60. REVIEW:
A=1/2 BH
A=1/2 (4 IN. X 6 IN.)
A=1/2 X 24 IN. 2
A=48 IN. 2

61. TEST

62. MULTIPLE CHOICE:
1.WHICH OF THE FOLLOWING FORMULA BELOW IS
USED TO COMPUTE THE AREA OF CYLINDER?
A. A=2ᴫR (H + R) B. A=2(LW) + 2(WH) + 2(LH)
C. A=6S2 D. A=1/2 BH

63. 2. WHICH OF THE FORMULA IS USED TO
COMPUTE THE AREA OF A TRIANGLE?
A. A=1/2 BH B. A=2(LW) + 2(WH) + 2(LH)
C. A=6S2 D. A=2ᴫR (H + R)

64. 3. YOU WANT TO KNOW THE AREA OF THE
BASKETBALL COURT OF OUR SCHOOL, WHICH DO
YOU THINK IS THE RIGHT FORMULA TO USE?
A. A=2(LW) + 2(WH) + 2(LH) B. A=1/2 BH
C. A=6S2 D. A=2ᴫR (H + R)

65. 4. WHAT COULD BE THE AREA OF A TRIANGLE WITH
A HEIGHT OF 6 INCHES AND A BASE OF 4 INCHES?
A. 48 IN. B. 46 IN. C. 44 IN. D. 42 IN

66. 5. WHICH OF THE FOLLOWING SHOWS THE IMPORTANCE OF USING
THE CORRECT FORMULA FOR COMPUTING AN AREA?
I. IT WILL GIVE YOU THE CORRECT SPACE FOR A SURFACE AREA.
II. IT CAN HELP YOU TO COMPUTE THE CORRECT AREA.
III. IT WILL NOT GIVE YOU THE CORRECT SPACE FOR A SURFACE
AREA.
IV. IT CANNOT HELP YOU COMPUTE THE CORRECT AREA.
A. I ONLY B. I & II C. III ONLY D. IV ONLY

67. 1.COMPUTE FOR THE AREA OF SAN PEDRO
NATIONAL HIGH SCHOOL BASKETBALL
COURT.
2. DO YOU THINK IT FOLLOWS THE
MEASURE FOR A STANDARD BASKETBALL
COURT?
ASSIGNMENT

68. TLE EXPLORATORY
COURSE
-SMAW-
SHIELDED METAL ARC
WELDING
Subject Teacher: Maribel G. Madarimot

69. THANK YOU FOR
LISTENING!
Don't hesitate to ask any questions!

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