📚 Year 9 Edexcel Engineering: Case Study Practical Exercises | Year 9 Edexcel 工程：案例分析实战演练
In Year 9 Edexcel Engineering, case study practical exercises are the bridge between theory and hands-on making. They challenge you to think like an engineer: defining problems, researching, designing, prototyping, testing and evaluating. This article takes you step by step through a real-world-style case study – designing a sustainable desktop organiser. Work through each stage to develop the analytical, creative and evaluative skills you need for your assignments.
在 Year 9 Edexcel 工程课程中，案例分析实战练习是连接理论与动手制作的桥梁。它们要求你像工程师一样思考：界定问题、开展调研、进行设计、制作原型、测试和评估。本文将逐步带你完成一个真实世界风格的案例研究 —— 设计一款可持续桌面收纳盒。认真完成每个阶段，培养课业所需的分析、创造和评估能力。
1. Understanding the Design Brief | 理解设计概要
A typical Year 9 design brief for this project might state: "Design and make a desktop organiser for students aged 13–16. It must hold a smartphone upright in both portrait and landscape orientations, provide storage for at least four pens and a pad of sticky notes, and be made from at least 50% recycled or certified sustainable materials. The product must be stable on a desk, weigh under 300 g, and cost no more than £5 to produce in a batch of 20." Your job is to break this down into a clear list of user needs, functional requirements and constraints.
一份典型的 Year 9 设计概要对本项目可能是这样表述的："为13-16岁的学生设计并制作一款桌面收纳盒。它必须能将智能手机竖直放置（横竖均可），至少存放四支笔和一叠便利贴，并且至少使用50%的回收材料或经认证的可持续材料。产品在桌面上必须稳定，重量低于300克，以20个为一批的生产成本不超过5英镑。" 你的任务就是将其分解为清晰的用户需求、功能要求和限制条件清单。
Key elements you should extract:
你需要提取的关键要素：
- Target user: students aged 13–16, likely using it during homework or revision.
- 目标用户：13至16岁的学生，可能在做作业或复习时使用。
- Primary functions: hold a phone, store pens and sticky notes.
- 主要功能：放置手机、存放笔和便利贴。
- Performance constraints: stable, lightweight (<300 g), must work in two orientations.
- 性能限制：稳定、轻质（小于300克）、竖放横放均可。
- Material constraint: at least 50% recycled or sustainable content.
- 材料限制：至少含50%的回收或可持续成分。
- Cost constraint: less than £5 per unit for a small batch.
- 成本限制：小批量生产时每件低于5英镑。
2. Research and Analysis | 调研与分析
Before sketching, you need to collect information. Start with product analysis: examine existing phone stands and desk organisers. Take photos, measure dimensions, note materials and joinery. Interview potential users – your classmates – and ask what they keep on their desk, how often they check their phone, and what frustrates them about current products. Record your findings in a research table, linking each observation to a design opportunity.
在草绘之前，你需要收集信息。从产品分析入手：研究现有的手机支架和桌面收纳用品。拍照、测量尺寸、记录材料和连接方式。访问潜在用户 —— 你的同学 —— 询问他们桌上常放什么，多久查看一次手机，现有产品有哪些不便之处。将发现记录在调研表格中，并把每一条观察与设计机会联系起来。
For example, your research might reveal that most students want the phone at eye level to reduce neck strain, or that plastic organisers are seen as cheap and environmentally unfriendly. Sustainability research is equally important: compare the carbon footprint of plywood, recycled cardboard and bioplastics. Look up the FSC certification for wood and the recycling codes for paper-based materials. This background evidence will make your design decisions far more convincing.
例如，你的调研可能显示，大多数学生希望手机处于视线水平以减少颈部疲劳，或者塑料收纳盒被认为廉价且不环保。可持续性调研同样重要：比较胶合板、回收纸板和生物塑料的碳足迹。查阅木材的 FSC 认证和纸基材料的回收代码。这些背景证据将使你的设计决策更具说服力。
3. Generating Initial Ideas | 生成初始想法
With a thorough understanding of the brief and research insights, it is time to generate a wide range of concepts. Use quick, annotated sketches – not finished artworks – to explore at least four distinct design ideas. Think about different mechanisms for the phone stand: a folding wedge, a slot-and-groove system, an adjustable backrest. Experiment with layouts for the pen holders and sticky note tray. Label each idea with the materials you would use and a rough size estimate.
在充分理解设计概要并掌握调研洞察后，就该生成多样化的概念了。使用快速的带注释草图（而非精修图），至少探索四种截然不同的设计构想。思考手机支架的不同机构：折叠楔形、卡槽系统、可调节后撑。尝试笔筒和便利贴盒的布局变化。在每个方案旁标注所用材料和大致尺寸。
Do not filter your ideas at this stage; embrace creativity. An idea can be inspired by a camping foldable cup holder, a wooden jigsaw puzzle, or even a geometric sculpture. The key is to keep the user and constraints in the back of your mind while letting your imagination flow. Once you have a rich set of thumbnails, you can move on to evaluation and selection.
在这一阶段不要筛选想法，拥抱创意。一个灵感可能来自露营用的折叠杯架、木制拼图，甚至是几何雕塑。关键是在脑海中带着用户和限制条件，同时让想象力自由驰骋。当你拥有丰富的缩略图后，便可进入评估与选定阶段。
4. Developing the Design | 深入设计方案
Select your strongest concept by checking it against the brief and research. Ask: does it hold a phone in both orientations? Is it stable? Can it be made mostly from recycled materials? Draw a more detailed working drawing – a 2D orthographic projection showing the front, side and plan views, with neat dimensions in millimetres. Include notes on edge finishes, joins and any moving parts. This drawing acts as a blueprint for making.
对照设计概要和调研结果，选定你最有力的概念。试问：它能否在横竖两个方向放置手机？是否稳定？能否大部分用回收材料制成？绘制一份更详细的工作图 —— 二维正投影图，包含正视图、侧视图和俯视图，并标注清晰的毫米尺寸。同时注写边缘处理、连接方式和活动部件的说明。这份图纸就是制作的蓝图。
At this point, you should also create a simple cutting list: a table of all components with their materials, dimensions and quantities. For our organiser, you might have a baseboard, a phone rest, pen holder walls and a sticky note tray. Use standard thicknesses such as 3 mm plywood or 5 mm recycled card laminate. Drawing to scale, even roughly, will help you avoid mistakes when prototyping.
此时，你还应制作一份简单的切割清单：列出所有零部件的材料、尺寸和数量。对于我们的收纳盒，你可能有底板、手机靠板、笔筒侧壁和便利贴托盘。使用标准厚度，如3毫米胶合板或5毫米再生纸层压板。按比例绘制，哪怕只是近似比例，也能帮助你在制作原型时避免错误。
5. Material Selection and Sustainability | 材料选择与可持续性
Choosing the right materials is critical in engineering. For this product, you must balance strength, weight, cost and environmental impact. Below is a simplified comparison of possible options:
正确选择材料在工程中至关重要。对于本产品，你必须平衡强度、重量、成本和环境影响。以下是一些可能选项的简化对比：
| Material (材料) | Key Properties (关键属性) | Sustainability Note (可持续性说明) |
|---|---|---|
| FSC-certified plywood (FSC认证胶合板) | Strong, stiff, can be laser-cut; sanded edges look clean (强度高、刚度好、可激光切割；打磨边整洁) | Renewable if certified; produces wood dust (若经认证可回收；会产生木屑) |
| Recycled greyboard (再生灰板纸) | Lightweight, cheap, easy to cut and glue; limited moisture resistance (轻质、便宜、易切割和粘接；耐湿性有限) | Made from post-consumer waste; fully recyclable (由消费后废料制成；完全可回收) |
| PLA bioplastic (PLA生物塑料) | Can be 3D-printed into complex shapes; fairly brittle (可3D打印出复杂形状；相当脆) | Derived from corn starch; industrially compostable (源自玉米淀粉；可工业堆肥) |
Your choice should be justified in the design portfolio. For instance, you might select greyboard for the body because it meets the 50% recycled target and keeps costs below £1.50 for materials, while a plywood phone rest adds durability where most wear occurs. Always link your decision back to the brief.
你的选择应在设计作品集中加以论证。例如，你可能为本体选择灰板纸，因其满足50%回收目标且材料成本控制在1.50英镑以内，而手机靠板采用胶合板可在磨损最严重之处增加耐用性。务必让每一项决策都追溯到设计概要。
6. Prototyping and Modelling | 原型制作与建模
Now you turn your design into a physical model. Start with a low-fidelity prototype using cardboard or foam board to check proportions and ergonomics. Can your phone slot firmly? Does it tip over when you touch the screen? Mark any modifications directly on the model with a pencil. Iterate rapidly – cut, tape, adjust – until the basic form works.
现在将设计转化为实物模型。先用卡纸或泡沫板制作低保真度原型，检查比例和人机关系。你的手机槽能否卡紧？触摸屏幕时会不会翻倒？用铅笔将需要修改之处直接标在模型上。快速迭代 —— 切割、胶带、调整 —— 直到基本形态运作良好。
Next, build a more refined prototype using your chosen materials. This is the stage where you practise manufacturing processes: measuring with a steel rule, cutting with a craft knife or saw, sanding edges, and gluing with PVA or hot glue. Keep a log of tools used and any safety precautions. If you have access to CAD and a laser cutter, you can produce precise parts, but hand skills are equally important. Document every step with photos for your portfolio.
接下来，用所选材料制作更精致的原型。这一阶段练习制造工艺：用钢尺测量、用美工刀或锯子切割、打磨边缘、用白胶或热熔胶粘接。记录所用工具及安全预防措施。如果你能使用 CAD 和激光切割机，可以制作精准零件，但手工技能同样重要。用照片记录每一步，收入作品集。
7. Testing and Evaluating | 测试与评估
Evaluation is not a one-off activity; it runs alongside prototyping. Create a test schedule that covers all the key criteria from the brief. For the desktop organiser, your tests could include:
评估不是一次性活动，而是与原型制作并行。制定一份涵盖概要中所有关键指标的测试计划。对于桌面收纳盒，测试可包括：
- Stability test: place the organiser on a flat surface and tap the phone screen with a finger. Observe whether it slides or tips. (稳定性测试：将收纳盒放在平整表面上，用手指点击手机屏幕，观察是否滑动或倾倒。)
- Phone fit test: insert phones of two different sizes (e.g. 6.1-inch and 6.7-inch screens) in both orientations. Note any gaps or tightness. (手机适配测试：插入两款不同尺寸的手机（如6.1英寸和6.7英寸屏幕），横竖两个方向测试，记录任何间隙或卡涩。)
- Capacity test: fill the organiser with the specified items – four pens, a sticky note pad – and check if everything fits without forcing. (容量测试：将指定物品 —— 四支笔、一叠便利贴 —— 放入，检查是否无需推挤都能容下。)
- User trial: ask three classmates to use the organiser for a study session and collect feedback using a short questionnaire. (用户试用：请三位同学在一次自习中使用收纳盒，并用简短问卷收集反馈。)
Record results in a table and add comments on whether each criterion is met, partially met, or not met. Honest evaluation, even if something fails, shows engineering maturity.
将结果记录在表格中，并标注每项标准是达标、部分达标还是未达标。即便有所失败，诚实的评价也能展现你的工程成熟度。
8. Reflecting and Improving | 反思与改进
Based on your test results and user feedback, identify at least two modifications that could improve the product. Maybe the phone slot is too tight, so you decide to increase its width by 2 mm. Perhaps users found the pen holder too shallow, leading to pens falling out when the organiser is moved. Propose a revised design with clear annotated sketches, explaining how each change addresses a specific weakness.
根据测试结果和用户反馈，至少找出两项可以改进产品的修改。也许是手机槽太紧，于是你决定将其宽度增加2毫米。也许用户觉得笔筒太浅，移动收纳盒时笔会掉出。提出改进后的设计方案，配以清晰的注释草图，解释每一处改动如何针对特定缺陷。
Reflective practice is a hallmark of good engineering. Write a short paragraph summarising what you learned from the case study. What went well? What would you do differently next time? For instance, you might realise that starting with more accurate templates would have saved sanding time, or that consulting users earlier would have avoided the slot-size issue. This reflection demonstrates your ability to learn and grow, which is often part of the Edexcel marking criteria.
反思性实践是优秀工程的标志。写一小段话，总结你从本案例中学到的内容。哪些方面做得不错？下次会有哪些不同做法？例如，你可能意识到如果一开始使用更精确的模板就能节省打磨时间，或者更早咨询用户就能避免卡槽尺寸的问题。这种反思体现了你学习和成长的能力，而这通常是 Edexcel 评分标准的一部分。
9. Communication and Presentation | 交流与展示
The final stage is to communicate your design journey clearly and professionally. Your project portfolio should include a title page, the design brief, research summary, development sketches, working drawings, a making log, test data and a final evaluation. Use consistent headings, page numbers, and a clear font. If you can, add a rendered CAD image of your final design beside a photo of the real prototype.
最后阶段是清晰、专业地展示你的设计历程。项目作品集应包含封面、设计概要、调研总结、发展草图、工作图、制作日志、测试数据和最终评价。使用一致的标题、页码和清晰的字体。如果可能，在真实原型照片旁附上最终设计的 CAD 渲染图。
Oral presentation or a video pitch can also be part of the exercise. Explain the problem, show your prototype in action, highlight the sustainable choices you made, and reflect on what you would improve. Aim for a confident, jargon-free delivery that a non-engineer could follow. Remember, in Edexcel Engineering, the ability to communicate design thinking is just as valued as the finished product itself.
口头陈述或视频路演也可作为练习的一部分。说明问题，演示原型运作，强调你做出的可持续选择，并反思你会改进之处。力求表达自信、避免行话，让非工程背景的人也能听懂。请记住，在 Edexcel 工程中，阐述设计思维的能力与成品本身同样重要。
Engineering success = clear analysis + creative ideation + rigorous testing (工程成功 = 清晰分析 + 创意构思 + 严格测试)
Published by TutorHao | Engineering Revision Series | aleveler.com
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