Ta nt ng e al Semicircle ete Diam

Ta nt ng e al Semicircle ete Diam Radiu r s Quadrant Cho rd Segm en t o Introduction or Tester Programme rm ct Se r Junior Certificate Technical Graphics No

Technical Graphics Communicates Information Technical Graphics is a Universal Language

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 communicate ideas or solve problems.

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

Skills developed in Technical Graphics Communication skills Problem solving skills Computer skills Creative thinking skills

Communication Skills

Problem Solving Skills

Problem Solving Skills

Computer Skills

Creative Thinking Skill

Design Skills

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

The Relationship between … Technical Graphics Applications of Geometry and Problem Solving Project Maths

Some Examples. . . Ordinary Level ◦ Paper 2 ◦ Leaving Certificate

Some Examples. . . Higher Level ◦ Paper 2 ◦ Leaving Certificate

Some Examples. . . Higher Level ◦ Paper 2 ◦ Leaving Certificate

Q R P

Gridlines

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

Activity 1

Activity 1

Activity 2

Activity 2

Activity 3 & 4

Activity 3 & 4

Activity 5

Activity 5 5 4 3 1 2 3 2 4 5 2 1 1 3 2 2 3 4 5 4 4 3 2 1 1 5 3 2 4 5 4 3 2 3 2 1 5 4 3 2 1 2 3 4 5

Activity 6

Activity 6

Polygons

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

Polygons Equilateral Triangle Octagon Square Nonagon Pentagon Decagon Hexagon Heptagon Circle

Pentagons

Activity 7

Activity 7 1 2 5 4 3

Activity 8

1 Activity 8 2 5 4 3

Activity 9

1 Activity 9 2 5 4 3

Hexagons

Activity 10

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

Activity 11

Activity 11 4 3 5 2 6 1

Activity 12

Activity 12 4 3 5 2 6 1

Activity 13

Activity 13 4 3 5 2 6 1

Activity 14

Activity 14 4 3 5 2 6 1

Activity 15

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

Activity 16

Activity 16 4 7 5 3 9 8 2 6 1

Activity 17

Activity 17 4 10 5 8 11 6 3 9 12 7 1 2

Activity 18

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

Octagons

Activity 19

Activity 19 6 5 4 7 3 8 1 2

Activity 20

Activity 20 5 4 6 7 3 2 8 1

Activity 21

Activity 21 5 4 6 7 3 2 8 1

Activity 22

Activity 22 5 4 6 7 3 2 8 1

Activity 23

Activity 23 5 4 6 7 3 2 8 1

Activity 24

Activity 24 5 4 6 7 3 2 8 1

The Ellipse

Learning Aims and Objectives 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 C

Ellipse: Applications Inside an Atom

Activity 25 & 26

Activity 25 Trammel Method ½ Minor Axis B A Minor Axis ½ Major Axis B B A P A B P P Major Axis A P

Activity 26 Minor Axis Major Circle ½ M aj o r. A xis ° 60 F 1 30° Major Axis F 2 Minor Circle

Visualization Exercises

Activity 27

Activity 28

Activity 29

Activity 30

Activity 31 1 3 2 3 3 3 3 4 4 2 2 3

Activity 32 2 3 2 1 1 2 3 1 1 4 1 1 2 1 1

Activity 33 3 4 1 2 2 2 4

Activity 34 1 3 3 4 4 1 1 2