IGCSE CAIE Engineering: Interdisciplinary Integrated Question Training | IGCSE CAIE 工程：跨学科综合题型训练

📚 IGCSE CAIE Engineering: Interdisciplinary Integrated Question Training | IGCSE CAIE 工程：跨学科综合题型训练

Integrated questions are a defining feature of the IGCSE CAIE Engineering paper. They require you to move confidently between mechanics, materials, electronics, manufacturing processes and economic decisions within one scenario. This article provides a structured training method, key formulas and a full worked example to help you master interdisciplinary questions.

综合题是 IGCSE CAIE 工程试卷的一大特点。它们要求你在同一个情境中，灵活运用力学、材料、电子、制造工艺和经济决策。本文提供结构化训练方法、关键公式以及完整例题，帮助你攻克跨学科题型。

1. Understanding Integrated Question Structure | 理解综合题型结构

An integrated engineering question often begins with a design brief, such as designing a bracket, a lifting device or a phone mount. You must extract engineering requirements, constraints and load data before choosing materials, sizing components and justifying the manufacturing route.

综合工程题通常先给出一个设计任务，例如设计支架、起重装置或手机支架。你必须在选择材料、计算尺寸和说明制造方法之前，先提取工程要求、限制条件和载荷数据。

Common command words in CAIE papers include calculate, state, explain and evaluate. Calculate requires a numerical answer with units, explain requires a scientific reason, and evaluate requires you to compare options and give a justified decision with advantages and limitations.

CAIE 试卷中常见的指令词包括 calculate、state、explain 和 evaluate。Calculate 要求带单位的数值答案，explain 要求给出科学原因，evaluate 要求比较不同方案并给出有依据的决定，包括优点和局限性。

Marks are awarded for selecting the correct formula, converting units, showing working, and giving a justified engineering decision. Do not only calculate; always link the result to the design context.

得分项包括选择正确公式、单位换算、展示计算步骤和给出合理的工程决策。不要只计算；始终把结果与设计情境联系起来。

2. Mechanics and Materials: Stress and Factor of Safety | 力学与材料综合：应力与安全因子

When a load is applied to a component, you can calculate the direct stress using the formula:

当载荷施加在构件上时，你可以用以下公式计算正应力：

σ = F ÷ A

Here F

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