Rapid Prototyping · SHS2 Engineering

Lesson notes

Learning Objectives

Indicator: 2.3.2.LI.1 - Apply CAD tools to create models

By the end of the lesson, learners can:

Identify and describe the main components of the CAD user interface, including the toolbar, drawing area, and layer panel.
Create and modify basic 2D sketches using drawing and editing tools in CAD software.
Convert 2D sketches into 3D models using extrusion and other modelling techniques.
Organise model components using layers and apply appropriate dimensions to their designs.
Produce a completed 3D model of a simple everyday object and explain the steps they followed.

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Curriculum details

Strand: Systems Design and Prototyping (Strand 3)
Sub-strand: Rapid Prototyping (3.2)
Content standard: 2.3.2.CS.1 - Demonstrate understanding of the use of CAD tools for the design of models. 2.3.2.LO.1 Navigate the CAD tools and perform basic operations and functions associated with model design. 2.3.2.LO.2 Implement CAD models using 3D printing systems.
Indicator: 2.3.2.LI.1 - Apply CAD tools to create models
Suggested placement: Semester 2, Week 14 (Week 34 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 97

Exemplars (from the NaCCA curriculum)

Talk for Learning: Begin by introducing learners to the fundamental concepts and principles of CAD, such as the user interface, basic drawing and modelling techniques, and the use of layers.
Experiential Learning: Provide learners with examples of real-world designs and have them practice creating similar designs on their own. This will help them understand how to apply the concepts they are learning in a practical setting.
Self-Directed Learning: Explore online resources: There are many online resources available that can help Learners learn more about CAD and how to use it. Some good options include online tutorials, instructional videos, and forums where learners can ask questions and get feedback from experts. Learners learn additional knowledge and experiences of 3D printing and present individual reports.
Project-based Learning: Incorporate hands-on projects that allow learners to apply their CAD skills to real-world design challenges. This can help them develop their problem-solving skills and better understand the design process.

Assessment (2.3.2.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding; Level 3 Strategic reasoning; Level 4 Extended critical thinking and reasoning.

Teaching and Learning Resources:
- Computers with CAD Software installed (Sketchup, Solid Works)
- Video Tutorials for Self-Directed Learning
- Textbooks and Design manuals for CAD practice assignments
- Integrated 3D printing machines with CAM functionality