Introduction or Tester Programme

Sect

or

Semicircle

Quadrant

Segment

Diamet

er Radius

Normal

Tang

ent

Chord

Technical Graphics is a Universal Language

• 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.

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

Communication skills Problem solving skills Computer skills Creative thinking skills

Technical Graphics can be very useful in other subjects such as:

MathematicsConstruction StudiesMaterials Technology Wood Engineering Technology & MetalworkJunior & Leaving Certificate TechnologyArt

Project Maths

Technical Graphics

Applications of Geometry and Problem

Solving

Applications of Geometry and Problem

Solving

Technical GraphicsTechnical Graphics

Project Maths

Project Maths

Ordinary Level

◦Paper 2◦Leaving Certificate

Higher Level

◦Paper 2◦Leaving Certificate

Higher Level

◦Paper 2◦Leaving Certificate

P

R

Q

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

Activity 1

Activity 1

Activity 2

Activity 2

Activity 3 & 4

Activity 3 & 4

Activity 5

1 2 3 4 5

1

2

3

4

5

1 2 3 4

1

2

3

4

234 55

5

1

2

3

4

1

2

3

4

2345

5

2

3

4

1 2 3 4

2

3

4

51234

Activity 5

Activity 6

Activity 6

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

Equilateral Triangle Square

Pentagon Hexagon Heptagon

Octagon Nonagon Decagon Circle

Polygons

Activity 7

1

2

34

5

Activity 7

Activity 8

1

2

34

5

Activity 8

Activity 9

1

2

34

5

Activity 9

Activity 10

Set your compass at the required radius and do not change it.

Set your compass at the required radius and do not change it.

1

2

3

4

5

6

Activity 10

Activity 11

1

2

3

4

5

6

Activity 11

Activity 12

1

2

3

4

5

6

Activity 12

Activity 13

1

2

3

4

5

6

Activity 13

Activity 14

1

2

3

4

5

6

Activity 14

Activity 15

1

2

3

4

5

6 7

8

9

12

11

10

Activity 15

Activity 16

1

2

3

4

5

6

7

8 9

Activity 16

Activity 17

1

2

3

4

5

6 7

8

910

11

12

Activity 17

Activity 18

1

2

3

4

5

6 7

8

9

12

11

10

Activity 18

Activity 19

1 2

3

4

56

7

8

Activity 19

Activity 20

1

2

3

4

5

6

7

8

Activity 20

Activity 21

1

2

3

4

5

6

7

8

Activity 21

Activity 22

1

2

3

4

5

6

7

8

Activity 22

Activity 23

1

2

3

4

5

6

7

8

Activity 23

Activity 24

1

2

3

4

5

6

7

8

Activity 24

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

Ellipse

Cylinder

Ellipse

Cone

Inside an Atom

Activity 25 & 26

½ Minor Axis

½ Major Axis

Min

or

Axis

Major Axis

PA B

P

A

B

P

A

B

P

A

B

P

A

B

Activity 25

Major Axis

Min

or

Axis

Major Circle

Minor Circle

30°

60°

½Major Axis

F2F1

Activity 26

Activity 27

Activity 28

Activity 29

Activity 30

4223

3334

2323

1313

Activity 31

1111

2311

3242

211

Activity 32

22

4224

3142

Activity 33

3

4

1342

31

31

Activity 34