📚 Year 9 WJEC Engineering: Summer Prep & Bridging Course | Year 9 WJEC 工程：暑期预习与衔接课程
Welcome to the Year 9 WJEC Engineering Summer Prep and Bridging Course. This resource is designed to help you transition smoothly from Key Stage 3 Design & Technology into the more focused world of GCSE Engineering. By exploring fundamental concepts in materials, mechanics, electronics and design, you will build confidence and get a head start on the WJEC specification.
欢迎来到 Year 9 WJEC 工程暑期预习与衔接课程。本资源旨在帮助你顺利从 KS3 设计与技术过渡到更具针对性的 GCSE 工程世界。通过探索材料、力学、电子学和设计的基本概念，你将建立信心，并在 WJEC 课程中抢占先机。
1. What Is Engineering? | 工程导论
Engineering is about turning scientific principles into real solutions. From the smartphone in your pocket to the bridges you cross, engineers design, build and test the products that shape our modern world. In your GCSE Engineering course, you will learn to think like an engineer, applying maths and physics to practical challenges.
工程学是将科学原理转化为实际解决方案的学科。从你口袋里的智能手机到你经过的桥梁，工程师设计、建造并测试塑造现代世界的产品。在 GCSE 工程课程中，你将学习像工程师一样思考，将数学和物理知识应用于实际挑战。
The field is divided into disciplines such as mechanical, electrical, civil, and electronic engineering. During this bridging programme, you will taste each of these areas through hands-on concepts and mini-projects.
工程领域分为机械、电气、土木和电子等学科。在本衔接课程中，你将通过动手概念和小项目体验每个领域。
2. Health and Safety in the Workshop | 车间中的健康与安全
Safety is the engineer’s number one priority. Before you touch any tool or machine, you must understand how to protect yourself and others. A tidy, well-organised workspace is the foundation of safe engineering.
安全是工程师的第一要务。在你接触任何工具或机器之前，必须了解如何保护自己和他人。整洁有序的工作空间是安全工程的基础。
Always wear Personal Protective Equipment (PPE) such as safety goggles, ear defenders, and steel-toe boots when required. Loose clothing must be secured, long hair tied back, and jewellery removed near moving parts.
始终按要求穿戴个人防护装备 (PPE)，如护目镜、耳罩和钢头靴。宽松衣物必须束好，长发扎起，靠近运动部件时摘下首饰。
Never operate a machine unless you have been properly trained and authorised. Report any damaged equipment or spills immediately, and always follow the safe system of work or risk assessment for each task.
除非经过适当培训并获得授权，否则切勿操作机器。立即报告任何损坏的设备或泄漏物，并始终遵循每项任务的安全工作制度或风险评估。
3. Materials and Their Properties | 材料及其性能
Engineers choose materials based on their properties: strength, hardness, toughness, ductility, and conductivity. Common classifications include metals, polymers, ceramics, and composites. Understanding these groups helps you select the right material for a given design.
工程师根据材料的性能（强度、硬度、韧性、延展性和导电性）进行选择。常见分类包括金属、聚合物、陶瓷和复合材料。理解这些类别有助于你为特定设计选择合适的材料。
Metals such as mild steel and aluminium are strong and can be shaped by cutting or bending. Polymers like acrylic and nylon are lightweight and corrosion-resistant, making them ideal for casings and everyday products.
低碳钢和铝等金属强度高，可通过切割或弯曲成形。亚克力和尼龙等聚合物重量轻、耐腐蚀，非常适合外壳和日常产品。
Composite materials combine two or more distinct materials to achieve superior properties – for example, carbon fibre reinforced polymer is both stiff and light, often used in aerospace and sports equipment.
复合材料将两种或多种不同材料结合在一起，以获得卓越的性能——例如碳纤维增强聚合物既坚硬又轻便，常用于航空航天和运动器材。
4. Mechanical Systems and
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