Active learning ideas
Concept Development and CAD Realisation is where the student's chosen design idea is transformed into a precise 3D model. This is the 'engine room' of the Student Assignment (Output 4 and 5). Students must use their parametric modeling skills to build every part of their design, ensuring that they fit together in a functional assembly.
Activity 01
In pairs, students 'test' each other's CAD models against ergonomic standards. They use digital 'mannequins' or simple physical mock-ups to see if a hand would actually fit the handle or if a button is reachable, then suggest specific CAD adjustments.
How do we transition from a 2D sketch to a 3D CAD model?
Activity 02
Students who have mastered a specific complex feature (like a 'Flex' tool for a curved cable or a 'Wrap' for a logo) give a 2-minute 'lightning demo' to a small group of peers who are struggling with similar design elements.
What ergonomic factors must be considered in the final design?
Activity 03
Students must 'explode' their CAD assembly and then put it back together using only mates. If the assembly 'breaks' or has interference, they must work with a partner to identify which part's dimensions need to be modified to ensure a perfect fit.
How can CAD assemblies test the functionality of a concept?
A few notes on teaching this unit
Watch Out for These Misconceptions
Students often try to model the whole product as one single part.
Explain that in the real world, products are made of multiple components. Modeling them as separate parts in an assembly allows for much more detail and is a requirement for the higher marks in the DCG assignment. A 'tear-down' of a real object helps reinforce this.
Ignoring 'real-world' dimensions (e.g., making a wall 0.1mm thick).
Have students use calipers to measure the thickness of similar real-world products. This 'reality check' helps them realize that their CAD model must be physically plausible to be a successful design.
Methods used in this brief
Design Research and Ideation
Students begin their final Leaving Certificate design assignment by analyzing the brief and conducting primary research. They use freehand sketching to explore initial design concepts.
8 methodologies
Portfolio Compilation and Evaluation
In this final topic, students compile their research, sketches, and CAD renders into a cohesive electronic portfolio. They critically evaluate their final design against the original brief.
8 methodologies