2. Introduction or Tester Programme Secto r Semicircle Quadrant Segmen t Diamete r Radiu s Normal Tange nt Chord

3. Technical Graphics is a Universal Language

4. Technical Graphics is one of the technology subjects offered at junior cycle. In Technical Graphics students use drawing equipment to create precise and accurate drawings. These drawings are used to communicate ideas or solve problems.

5.  How to produce neat drawings of everyday items  How to represent 3-D objects on paper  How to create models of objects on the computer  How to use freehand sketching, colouring and shading to represent objects

6.  Communication skills  Problem solving skills  Computer skills  Creative thinking skills

13. Technical Graphics can be very useful in other subjects such as:  Mathematics  Construction Studies  Materials Technology Wood  Engineering Technology & Metalwork  Junior & Leaving Certificate Technology  Art

14. Project Maths Technical Graphics Applications of Geometry and Problem Solving Technical Graphics Technical Graphics Project Maths Project Maths

15.  Ordinary Level ◦ Paper 2 ◦ Leaving Certificate

17.  Higher Level ◦ Paper 2 ◦ Leaving Certificate

19.  Higher Level ◦ Paper 2 ◦ Leaving Certificate

21. P R Q

24.  From these exercises you will learn: ◦ The difference between construction lines and finish lines ◦ The importance of draftsmanship ◦ The effect of shading and rendering on a drawing ◦ What indexing is, and how it can assist complicated drawings

25. Activity 1

27. Activity 2

29. Activity 3 & 4

31. Activity 5

32. 1 2 3 4 5 1 2 3 4 5 1 2 3 4 1 2 3 4 23 4 5 5 5 1 2 3 4 1 2 3 4 23 4 5 5 2 3 4 1 2 3 4 2 3 4 5 1 23 4

33. Activity 6

36.  From these exercises you will learn: ◦ The name and properties of various polygons ◦ What indexing is, and how it can assist complicated drawings ◦ How to construct a Hexagon using a compass ◦ How to construct an Octagon using a square and a compass ◦ That joining points in a different order can produce different shapes ◦ The importance of draftsmanship ◦ The effect of shading and rendering on a drawing

37. Equilateral Triangle Square Pentagon HexagonHeptagon Octagon NonagonDecagonCircle Polygons

40. Activity 7

41. 1 2 3 4 5

42. Activity 8

43. 1 2 3 4 5

44. Activity 9

45. 1 2 3 4 5

47. Activity 10

48. Set your compass at the required radius and do not change it. 1 2 3 4 5 6 Activity 10

49. Activity 11

50. 1 2 3 4 5 6

51. Activity 12

52. 1 2 3 4 5 6

53. Activity 13

54. 1 2 3 4 5 6

55. Activity 14

56. 1 2 3 4 5 6

57. Activity 15

58. 1 2 3 4 5 6 7 8 9 12 11 10 Activity 15

59. Activity 16

60. 1 2 3 4 5 6 7 8 9

61. Activity 17

62. 1 2 3 4 5 6 7 8 910 11 12 Activity 17

63. Activity 18

64. 1 2 3 4 5 6 7 8 9 12 11 10 Activity 18

66. Activity 19

67. 1 2 3 4 5 6 7 8

68. Activity 20

69. 1 2 3 4 5 6 7 8

70. Activity 21

71. 1 2 3 4 5 6 7 8

72. Activity 22

73. 1 2 3 4 5 6 7 8

74. Activity 23

75. 1 2 3 4 5 6 7 8

76. Activity 24

77. 1 2 3 4 5 6 7 8

79.  From these exercises you will learn: ◦ How to construct an ellipse using the trammel method ◦ How to construct an ellipse using the compass method ◦ Application of the ellipse in everyday life ◦ The importance of draftsmanship ◦ The effect of shading and rendering on a drawing

80. Ellipse Cylinder Ellipse Cone

81. Inside an Atom

82. Activity 25 & 26

83. ½ Minor Axis ½ Major Axis Minor Axis Major Axis P A B P A B P A B P A B P A B Activity 25

84. Major Axis Minor Axis Major Circle Minor Circle 30° 60° ½Major Axis F2 F1 Activity 26

86. Activity 27

87. Activity 28

88. Activity 29

89. Activity 30

90. 4 2 2 3 3 3 3 4 2 3 2 3 1 3 1 3 Activity 31

91. 1 1 1 1 2 3 1 1 3 2 4 2 2 1 1 Activity 32

92. 2 2 4 2 2 4 3 1 42 Activity 33

93. 3 4 1 3 4 2 3 1 3 1 Activity 34