📚 Year 7 CIE Engineering: Core Knowledge Summary | Year 7 CIE 工程：核心知识点梳理
Welcome to the Year 7 CIE Engineering curriculum. This subject introduces young learners to the exciting world of engineering, covering the design process, materials, tools, simple mechanics, and electronics. In this article, we summarise all the key knowledge areas you need to master for a strong foundation in engineering.
欢迎学习 Year 7 CIE 工程课程。这门课程将带你进入激动人心的工程世界，涵盖设计流程、材料、工具、简单力学以及电子学。本文将梳理你必须掌握的所有核心知识点，为工程学习打下坚实基础。
1. What is Engineering? | 什么是工程？
Engineering uses scientific and mathematical principles to design and build solutions that meet human needs. It involves creativity, problem-solving, and practical skills. Engineers can specialize in civil, mechanical, electrical, or software engineering, but all follow core design principles.
工程利用科学和数学原理来设计和构建满足人类需求的解决方案。它涉及创造力、问题解决能力和实践技能。工程师可以专攻土木、机械、电气或软件工程，但都遵循核心设计原则。
In Year 7, you will start to think like an engineer by tackling simple design challenges and learning how things work. You'll discover that engineering is all around us, from bridges to smartphones.
在Year 7，你将通过解决简单设计挑战并了解事物如何运作，开始像工程师一样思考。你会发现工程无处不在，从桥梁到智能手机。
2. The Engineering Design Process | 工程设计流程
The engineering design process is a step-by-step method used to develop products and systems. The typical stages are: identify the problem, research existing solutions, brainstorm possible ideas, select the best solution, create a detailed design, build a prototype, test and evaluate, and finally improve the design.
工程设计流程是用于开发产品和系统的分步方法。典型阶段包括：明确问题、调研现有解决方案、头脑风暴可能方案、选择最佳方案、创立详细设计、构建原型、测试与评估，最后改进设计。
This process is iterative, meaning you can go back to earlier stages if testing reveals flaws. Good documentation using a design portfolio is essential in CIE Engineering.
这个过程是迭代的，意思是如果测试发现缺陷，你可以回到前面的阶段。在CIE工程中，使用设计作品集进行良好文档记录至关重要。
3. Health and Safety in the Workshop | 工作坊健康与安全
Safety is the top priority in any engineering workshop. Always wear appropriate personal protective equipment (PPE), including safety goggles to protect eyes, an apron to shield your body, and sturdy closed-toe shoes. Long hair must be tied back, and loose clothing or jewellery should be removed.
在任何工程工作坊中，安全是头等大事。始终穿戴适当的个人防护装备，包括保护眼睛的护目镜、防护身体的围裙和坚固的包头鞋。长发必须扎起来，宽松衣物或首饰应摘除。
Keep your workspace clean and clutter-free. Know the location of emergency stops, fire extinguishers, and first-aid kits. Always follow instructions when using tools or machines, and never distract others while they are working.
保持工作空间干净整洁、无杂物。知晓紧急停止按钮、灭火器和急救箱的位置。使用工具或机器时务必遵守指示，切勿在他人工作时分散其注意力。
4. Materials and Their Properties | 材料及其特性
Engineers select materials based on their properties. Common categories include woods (softwoods like pine, hardwoods like oak), metals (ferrous like steel, non-ferrous like aluminium), polymers (thermoplastics and thermosets), and composites (like fibreglass).
工程师根据特性选择材料。常见类别包括木材（软木如松木，硬木如橡木）、金属（黑色金属如钢，有色金属如铝）、聚合物（热塑性和热固性塑料）和复合材料（如玻璃纤维）。
Key properties to consider are strength (resistance to breaking), hardness (resistance to scratching), toughness (ability to absorb energy), flexibility (ability to bend), and conductivity (ability to transfer heat or electricity).
需要考虑的关键特性有强度（抵抗断裂的能力）、硬度（抵抗刮擦的能力）、韧性（吸收能量的能力）、柔韧性（弯曲能力）和导电性/导热性（传递热或电的能力）。
Understanding material properties helps you decide, for example, to use copper for electrical wires because of its high conductivity, or wood for a handle because it is light and insulating.
理解材料特性有助于做出决策，例如使用铜制作电线因其高导电性，或使用木材制作手柄因其轻便且绝缘。
5. Basic Tools and Equipment | 基本工具与设备
In Year 7, you will become familiar with essential hand tools. A coping saw or hacksaw is used for cutting wood or metal. Files smooth rough edges and shape materials. A bench vise holds workpieces securely. Screwdrivers, spanners, and pliers are used for assembly.
在Year 7，你将熟悉基本手工具。曲线锯或钢锯用于切割木材或金属。锉刀打磨粗糙边缘并成形材料。台钳能牢固夹持工件。螺丝刀、扳手和钳子用于装配。
Power tools like electric drills and sanders may be introduced later. Always check that tools are in good condition, and use the correct tool for the job. Never use a tool if you are unsure how to operate it safely.
电动工具如电钻和砂光机可能稍后介绍。务必检查工具状况良好，并使用正确的工具进行作业。如果不确定如何安全操作，切勿使用工具。
6. Measuring and Marking Out | 测量与划线
Accurate measuring ensures parts fit together correctly. Standard tools include a steel ruler for linear measurements, callipers for internal and external dimensions, and a try square to mark 90-degree angles. Vernier callipers may be introduced for greater precision.
精确测量能确保零件正确配合。标准工具包括用于线性测量的钢直尺、用于内外径量测的卡钳，以及用于标记90度角的直角尺。为提高精度，可能会介绍游标卡尺。
Marking out transfers the design onto the workpiece. Use a scriber to scratch lines on metal, a marking gauge for wood, and a centre punch to create a small indent before drilling. Always measure twice to avoid waste.
划线是将设计转移到工件上。使用划针在金属上划出线条，在木材上使用划线规，并在钻孔前使用中心冲冲出小凹点。务必测量两次以避免浪费。
7. Joining Methods | 连接方法
There are permanent and temporary joining methods. Permanent joints include welding (melting metals together), soldering (using a filler metal at lower temperature), and adhesive bonding (glue). Temporary joints use fasteners like nuts and bolts, screws, and rivets.
连接方法分为永久性和临时性。永久性连接包括焊接（熔化金属使其结合）、锡焊（在较低温度下使用填充金属）和胶接（粘合）。临时性连接使用螺母
Published by TutorHao | Year 7 工程 Revision Series | aleveler.com
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