Introduction or Tester Programme Secto r Semicircle Quadrant Segmen t Diamete r Radiu s Normal Tange nt 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:  Mathematics  Construction Studies  Materials Technology Wood  Engineering Technology & Metalwork  Junior & Leaving Certificate Technology  Art

Project Maths Technical Graphics Applications of Geometry and Problem Solving Technical Graphics Technical 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 2

Activity 3 & 4

Activity 5

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 HexagonHeptagon Octagon NonagonDecagonCircle Polygons

Activity 7

Activity 8

Activity 9

Activity 10

Set your compass at the required radius and do not change it Activity 10

Activity 11

Activity 12

Activity 13

Activity 14

Activity 15

Activity 15

Activity 16

Activity 17

Activity 17

Activity 18

Activity 18

Activity 19

Activity 20

Activity 21

Activity 22

Activity 23

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 Minor Axis Major Axis P A B P A B P A B P A B P A B Activity 25

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

Activity 27

Activity 28

Activity 29

Activity 30

Activity 31

Activity 32

Activity 33

Activity 34