The Design Process and Drawing

§Text Passage

1Summary 重點摘要

The design process runs from identifying a problem through research, ideas, models and testing to evaluation and improvement, looping until the goal is met. Factor analysis and mind maps crack the problem; sketches, perspective and isometric drawings express the ideas; design movements shape the style.

2Vocabulary cards Vocabulary

3Step by step Steps

1. The design process at a glanceThe design process is an organised route to a solution: identify the problem, research, develop ideas, build models, test, evaluate, improve. It is not a one-way pipeline but a loop — if testing and evaluation fall short of the goals, take what you learned back to an earlier stage and try again until the design is sound. For example, designing a classroom storage rack: define the problem (books and clutter pile up in a mess), research, sketch ideas, build a card model and test the load — if the shelf proves too shallow, resize and rebuild. That is the loop in action.
2. Identifying problems and solving methodsGood design starts by framing the problem: who is affected, where does it happen, what causes it? Four common methods help: factor analysis splits a complex problem into causes to study one by one; lateral thinking steps outside the usual frame and attacks from unexpected angles; a mind map radiates associations around a central idea; brainstorming harvests a flood of ideas from the team in a short time, quantity before quality. For example, the problem of a heavy school bag factors into textbook load, packing habits, strap design and the bag's own weight — four directions to attack one by one.
3. Research and communicating solutionsAfter defining the problem, research different fields: read up on existing products, interview users about real needs, measure real objects for dimensions. Findings must be communicated in drawings and words so others understand the problem, the design and the solution — engineering lives on communication, and clear records make later reviews possible. For example, before designing a classroom rack, measure the available space and survey the class's textbook counts, then write the findings into a one-page brief with sketches; with one clear sheet, the class teacher approves making at once.
4. Freehand sketches and projection drawingIdeas travel through drawings: freehand sketches record inspiration fast — untidy is fine, but mark sizes and features; formal presentation uses projection drawings. Perspective drawing shrinks distant lines and looks most like the eye's view, ideal for showing appearance; isometric drawing sets the three faces on thirty-degree axes so length, width and height can be measured directly, ideal for construction; a three-dimensional model can be turned and modified from any angle. For example, pitch a new lamp-box to a client with perspective, but brief the maker with isometric — each drawing has its own strength.
5. Building models and testingPaper plans must meet reality: design and build models from different materials — card, foam, balsa — then use the models to test the chosen functions and properties: load, opening, stability, whether the size fits. While building, choose hand tools, machines and equipment correctly and safely according to the material and the technical parts, following the check procedures learned earlier. For example, to test how strap width spreads shoulder pressure, make several samples of different widths from foam and webbing and ask classmates to try each and report the feel.
6. Evaluate, improve: the design cycleAfter testing, evaluate the solution against the original goals: does it work, is the cost acceptable, are users satisfied? Shortfalls mark the improvement points, and changes usually demand another round of testing — that is the design cycle. Recognising the concepts used in the cycle (defining, analysing, synthesising, evaluating) and applying them to new problems is a core skill of this course. For example, when the rack model's shelf sags, switching to a double-layer card sandwich doubles the load capacity on retest — only then is the design finished.
7. Design movements and styleBehind the changing look of products stand design movements: Arts and Crafts rebelled against shoddy machine goods and prized handwork; Art Nouveau loved plant-like curves; Art Deco celebrated geometry and luxury; Bauhaus declared form follows function and married art to mass production; afterwards Modernism, Pop Art, Memphis and Postmodernism each answered their era. Knowing the movements gives your designs a stylistic language. For example, Bauhaus minimal geometry lives on in today's clean-lined furniture and plain, honest packaging.
8. From design to product: production and ethicsThe last mile of design is production thinking: mass production standardises parts and simplifies processes to cut cost; designers also plan how the product functions in home, leisure, commercial and industrial settings — hairdryers, vacuum cleaners and irons are everyday examples — and which materials, processes and basic scientific principles are involved, and how the product will be disposed of. Ethics matter too: design, production and sales must be honest, safe and environmentally sound. For example, a hairdryer's heat-resistant shell, motor and heating wire all raise questions of burn and shock protection and of recycling at end of life.

4Diagrams Diagrams

5Worked example Example

6Common mistakes Mistakes

7Quick check Quick check

8Recap Recap

• The design process: identify, research, ideas, model, test, evaluate, improve — in a loop
• Four solving methods: factor analysis, lateral thinking, mind maps, brainstorming
• Sketches record ideas; perspective shows looks; isometric gives measurable faces
• Build models to test functions, then evaluate against goals and improve
• Know movements like Bauhaus, and weigh production, application and ethics