Junior Certificate Technical Graphics

2. Tangent Junior Certificate Technical Graphics Semicircle Normal Diameter Radius Introduction or Tester Programme Quadrant Sector Chord Segment

3. Technical GraphicsCommunicates Information Technical Graphics is a Universal Language

4. What is Technical Graphics • 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 communicateideas or solve problems.

5. What will I learn in Technical Graphics? • 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. Skills developed in Technical Graphics • Communication skills • Problem solving skills • Computer skills • Creative thinking skills

7. Communication Skills

8. Problem Solving Skills

9. Problem Solving Skills

10. Computer Skills

11. Creative Thinking Skill

12. Design Skills

13. Is Technical Graphics Useful in Other Subjects? 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. The Relationship between … Technical Graphics Project Maths Applications of Geometry and Problem Solving Project Maths Technical Graphics

15. Some Examples...... • Ordinary Level • Paper 2 • Leaving Certificate

17. Some Examples...... • Higher Level • Paper 2 • Leaving Certificate

19. Some Examples...... • Higher Level • Paper 2 • Leaving Certificate

21. Q R P

23. Gridlines

24. Learning Aims and Objectives • 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

26. Activity 1

27. Activity 2

28. Activity 2

29. Activity 3 & 4

30. Activity 3 & 4

31. Activity 5

32. Activity 5 5 1 4 3 2 3 5 4 2 2 1 1 3 2 2 4 3 3 4 4 5 5 5 1 4 3 3 2 1 4 2 4 4 5 4 3 3 3 2 2 2 1 1 5 4 3 3 2 1 4 2 5

33. Activity 6

34. Activity 6

35. Polygons

36. Learning Aims and Objectives • 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. Polygons Hexagon Heptagon Square Equilateral Triangle Pentagon Octagon Nonagon Decagon Circle

39. Pentagons

40. Activity 7

41. Activity 7 1 2 5 4 3

42. Activity 8

43. 1 Activity 8 2 5 4 3

44. Activity 9

45. Activity 9 1 2 5 4 3

46. Hexagons

47. Activity 10

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

49. Activity 11

50. Activity 11 4 3 5 2 6 1