IB Design Technology 3.2 Graphical Modelling Notes

Graphical Modelling

1. Graphical models are essential tools for communicating design ideas.
2. They help designers explore possibilities, refine concepts, and present solutions effectively.

The development of ideas through graphical models allows designers to explore and deepen their understanding of a problem and its context.

Sketching vs. Formal Drawing Techniques

1. Graphical models are 2D representations used by designers to explore and communicate ideas.
2. Different techniques help at different stages of the design process.

Sketching (Quick & Easy)

1. Fast and rough – Used at the start of the design process.
2. Explores many ideas quickly – Helps generate and refine concepts.
3. No strict rules – Freehand drawings that focus on creativity.
4. Communicates early thoughts – Helps share ideas with clients and the design team.

Formal Drawing Techniques (Precise & Technical)

As the design develops, more detailed and accurate drawings are needed:

1. Isometric Drawings – 3D-like drawings used to show depth and dimensions.
2. Orthographic Drawings – Multi-view (top, front, side) diagrams that show exact measurements.
3. CAD Renderings – Digital 3D models that provide a high-fidelity version of the design.

How designers communicate a 3D view of an object

1. Orthographic drawings
2. Isometric drawings
3. Part and assembly drawings

Orthographic Drawings

1. Orthographic drawings are technical 2D drawings that show different sides of an object without perspective.
2. Instead of looking like a 3D sketch, they present flat views of each side (top, front, side) to give an accurate representation of the object's shape and dimensions.
3. Features