If you are finding this blog useful please support the DCGist on Patreon.

INTRODUCTION

This week we focus on the Development topic. Developments are a key topic in Junior Cycle Technical Graphics and the Leaving Certificate progression is not that much of a leap. This topic does not come up often but it can be examined in Section A or Section B. Developments are also a very important part of Surface Geometry in Section C.

SYLLABUS LEARNING OUTCOMES

(Leaving Certificate Design and Communication Graphics Syllabus, 2006)

INTERSECTION AND DEVELOPMENT OF SURFACES

WHAT YOU NEED TO KNOW

ORDINARY LEVEL AND HIGHER LEVEL

Construct the development of a right solids.
Determine the true distance of points on the surfaces of solids.

HIGHER LEVEL

Develop and Envelope the surfaces of oblique prisms and pyramids.

PRACTICE QUESTIONS

PRACTICE TEXTBOOK QUESTIONS

(Anderson, 2014)

P200 Q9
P200 Q10
P201 Q12
P208 Q6
P218 Q6

PRACTICE EXAM QUESTIONS

LONG QUESTIONS

2017 HL B-3

This weeks questions are focused more on textbook questions as Developments does not come up regularaly in the examination. This does not mean that it won't come up this year so it's important to revise it like all over topics.

REFERENCES

Leaving Certificate Design and Communication Graphics Syllabus. (2006). Dublin: The Stationary Office.

Anderson, D. (2014). Graphics in Design and Communication: One Volume Edition. Dublin: Gill & Macmillan.

Dec 11, 2017

DCG Revision Week 12 - Assemblies

In this weeks revision blog we look at Assemblies which are the final Applied Geometry topic on the Leaving Certificate Examination paper.

Dec 4, 2017

DCG Revision Week 11 - Geologic Geometry

In this weeks revision blog we look at Geologic Geometry which is the first Applied Geometry topic on the Leaving Certificate Examination paper.

It is split into 3 main areas, all of which are usually on the paper.

Profiles
Mining Geometry
Earthen works (Road Geometry)

Nov 13, 2017

DCG Revision Week 10 - Developments

Nov 6, 2017

DCG Revision Week 9 - Cubes and Tetrahedrons

This week we will be revising the Cube and the Tetrahedron. These are two important shapes as they have unique characteristics and a number of specific constructions that you need to know. This topic has come up in Section A in the past.

Oct 29, 2017

DCG Revision Week 8 - Perspective Projection

This week we are looking at Perspective Projection. Perspective Projection is the topic in board drawing which most closely resembles what the human eye sees when you look at an object.

Oct 23, 2017

DCG Revision Week 7 - Axonometric Projection

This weeks topic is the first Pictorial Projection topic. It is the most closely aligned Pictorial topic to the rest of the course as Axonometric views are created using projections from the principal planes of reference onto an Axonometric plane.

Oct 16, 2017

DCG Revision Week 6 - Traces of Planes

This weeks revision topic is more of a concept than an entire topic. Finding the traces of a plane is part of the Oblique Plane topic but it can be asked in many different ways. The most common topics for traces to be asked as part of are Solids in Contact, Laminar Planes, Axonometric Projection.

Oct 9, 2017

DCG Revision Week 5 - Skew Lines

This weeks topic is Skew Lines. Skew Lines can come up in Section A, Section B and they are also an important part of Geologic Geometry in Section C. Skew Lines is another one of those vital topics as chances are that it will appear somewhere on your Leaving Cert paper.

Oct 2, 2017

DCG Revision Week 4 - Laminar Planes

The topic we will be revising this week is Laminar Planes. Laminar Planes are part of the Oblique Planes section of the course. The constructions in this topic are fundamental can could be used for a number of topics in DCG.

Sep 25, 2017

DCG Revision Week 3 - Interpenetration of Solids

This week we're going to focus on Interpenetration of Solids. In essence this topic is about finding the Orthographic Views of a solid cutting through another solid. The ultimate aim of Interpenetration of Solids questions is to find the Line/s of Interpenetration. This topic can come up on the exam as a short question in Section A or a long question in Section B.