📚 IB & AQA Science: End-of-Term Revision Checklist | IB 与 AQA 科学：期末复习清单
It’s the end of term and the pressure is on. Whether you are following the IB Diploma or AQA A-level science course, a solid revision plan can make the difference between stress and success. This checklist brings together key strategies, essential topics, and exam-specific tips for biology, chemistry, and physics students across both programmes. Use it to stay organised and focus your revision where it matters most.
一学期即将结束，压力随之而来。无论你学习的是 IB 文凭课程还是 AQA A-level 科学，一份扎实的复习计划都能让你化压力为成功。本清单汇集了针对 IB 和 AQA 生物、化学、物理学生的关键策略、必考主题和考试技巧。用它来保持条理，把精力集中在最重要的地方。
1. Decode the Exam Blueprint | 解读考试蓝图
Before diving into notes, you must know exactly what each paper expects. IB science subjects typically consist of Paper 1 (multiple choice), Paper 2 (short-answer and extended-response) and Paper 3 (data-based questions and option topic). Meanwhile, AQA A-level sciences have three papers: two covering specific content areas and a third that assesses practical skills and synoptic understanding. Print out the official syllabus or specification and highlight the command terms – ‘explain’, ‘evaluate’, ‘deduce’ – because they tell you how to structure your answers.
在埋头复习笔记之前，你必须清楚每份试卷的要求。IB 科学科目通常包含试卷一（选择题）、试卷二（简答题和扩展题）和试卷三（数据题和选修主题）。AQA A-level 科学则有三份试卷：两份覆盖特定内容领域，第三份评估实验技能和综合理解。把官方大纲或 specification 打印出来，用荧光笔标出指令词——‘explain’、‘evaluate’、‘deduce’——因为这些词直接告诉你该如何组织答案。
2. Master Core Definitions and Concepts | 攻克核心概念与定义
In both IB and AQA sciences, one-mark definition questions are easy wins. For physics, be ready to define displacement, electric field strength or half-life. In chemistry, nail down enthalpy change, electronegativity and rate of reaction. Biology students should know active site, osmosis and trophic level. Use flashcards with the term on one side and a concise definition plus an example on the other. Do not just memorise – test yourself by writing out the definition from memory, then check the exact phrasing expected by the mark scheme.
无论是 IB 还是 AQA 科学，一分两分的定义题都是稳拿分的题目。物理要能准确定义位移、电场强度或半衰期。化学要掌握焓变、电负性和反应速率。生物学生则需熟记活性位点、渗透作用和营养级。用闪卡，一面写术语，另一面写简洁的定义加一个例子。不要死记硬背——先凭记忆写出定义，再对照评分标准检查措辞是否精准。
3. Own the Formula Sheet and Key Equations | 掌控公式表与关键方程
Physics and parts of chemistry are equation-rich. For IB, the data booklet provides many formulas, but you must know when and how to use them. AQA also provides a formula sheet, yet rearranging equations and selecting the right one are your responsibility. Create a personal equation compendium organised by topic. Next to each equation, write a one-sentence description, a sample calculation and the standard units. Common examples include:
物理和部分化学内容包含大量方程。IB 的数据手册提供许多公式，但你必须知道何时以及如何使用它们。AQA 也提供公式表，但移项变形和选择正确公式仍需你自己完成。制作一本按主题分类的个人方程集，在每个公式旁写上一句说明、一个示例计算和标准单位。常用公式如：
v = u + a t F = m a ΔG = ΔH – TΔS n = c V pH = -log[H⁺]
Practise algebraic manipulation until you can rearrange any of these effortlessly without looking at the sheet.
反复练习代数变换，直到可以不看公式表就轻松变形任何一个方程。
4. Lock Down Units, Prefixes and Conversions | 确保单位、词头与换算零失误
Losing marks for missing unit conversions is one of the most frustrating errors. Know the SI base units (kg, m, s, A, K, mol) and common prefixes from pico (10⁻²) to tera (10²). Be particularly careful when converting between cm² and m², or dm³ and m³. AQA often requires an answer in standard form; IB also expects consistent units in data-response questions. A quick pre-exam drill: convert 5.2 cm² to m², or 0.15 dm³ to m³, and write the answer in standard form.
因单位换算丢分是最让人懊恼的错误之一。熟记 SI 基本单位（kg, m, s, A, K, mol）以及从皮可（10⁻²）到太拉（10²）的常用词头。特别注意 cm² 与 m²、dm³ 与 m³ 之间的换算。AQA 常要求以标准形式作答；IB 在处理数据题时同样要求单位统一。考前快速练习：将 5.2 cm² 换算成 m²，或将 0.15 dm³ 换算成 m³，并以标准形式表达结果。
5. Interpret Graphs, Tables and Diagrams | 解读图表与示意图
Both IB and AQA papers feature stimulus material that tests your ability to extract information. Underline the axes and their units before reading the graph. For a linear relationship, be ready to calculate gradient and intercept; for curves, draw a tangent and find the rate. In chemistry, equilibrium graphs and Maxwell–Boltzmann distributions are common. In biology, you might encounter nucleotide sequences or food webs. Practise with past-paper figures, and always label correctly when asked to sketch.
IB 与 AQA 的试卷都会出现需要你提取信息的材料题。读图前先画出坐标轴及其单位。线性关系要会计算斜率和截距；曲线则需画切线求速率。化学常考平衡图与麦克斯韦-玻尔兹曼分布。生物中可能出现核苷酸序列或食物网。用历年真题中的图表进行练习，并要求作图时始终正确标注。
6. Nail Experimental Design and Evaluation | 攻克实验设计与评估
IB science includes the Internal Assessment (IA) – a major project you have completed – but exam papers still test your understanding of variables, uncertainties and methods. AQA’s Paper 3 includes questions on required practicals and experimental techniques. For any experiment, be able to identify independent, dependent and control variables, suggest improvements to reduce random and systematic errors, and calculate percentage uncertainty. Use the structure: ‘If we change (IV), then (DV) will change because (scientific reasoning).’ This will also prepare you for the planning questions in IB Paper 3.
IB 科学虽然包含内部评估（IA）这项大作业，但试卷仍会考查你对变量、不确定度和方法的理解。AQA 的试卷三包含必修实验和实验技术题。对于任何实验，都要能识别自变量、因变量和控制变量，提出减少随机误差和系统误差的改进方法，并计算百分比不确定度。套用这个句式：‘如果改变（自变量），那么（因变量）会改变，因为（科学原理）。’这也能帮助你应对 IB 试卷三中的实验设计题。
7. Avoid Common Pitfalls and Misconceptions | 避开常见陷阱与迷思概念
Every mark scheme reveals the same repeated errors: confusing ‘accurate’ with ‘precise’, drawing ionic bonding with molecule-like pairs, or stating that ‘energy is released’ when breaking bonds. Compile a personal ‘pitfall list’ from your own past papers. For physics, remember that centripetal force is not a separate force but a resultant force. In chemistry, a catalyst does not alter the equilibrium position. In biology, natural selection acts on individuals but populations evolve. Review this list just before the exam to sharpen your awareness.
每份评分标准都揭示出反复出现的错误：混淆‘准确度’与‘精密度’，把离子键画成分子的样子，或声称断裂化学键会‘释放能量’。根据自己的历年试卷整理一份‘陷阱清单’。物理中要记住向心力不是一种单独的力，而是合力。化学中催化剂不改变平衡位置。生物里自然选择作用于个体，但进化发生在种群层面。考前浏览这份清单，保持警觉。
8. Tackle Calculation Questions Systematically | 系统破解计算题
Multi-step calculations – such as titration, Gibbs free energy or Hardy–Weinberg problems – need a disciplined approach. Start by listing all given data with symbols and units. Write down the relevant equation, substitute the numbers, and perform the calculation step by step. Show your workings clearly; both IB and AQA award method marks even if the final answer is wrong. For complex problems, use a bulleted approach in your answer book: ‘Step 1: convert to mol’, ‘Step 2: use mole ratio’, ‘Step 3: calculate mass’.
多步计算题——如滴定、吉布斯自由能或哈代–温伯格问题——需要有条不紊的方法。先用符号和单位列出所有已知数据。写出相关方程，代入数值，一步步计算。清晰地展示过程；IB 和 AQA 即使最终答案有误，也会对正确的方法给分。对于复杂的问题，在答题册中用分步方式作答：‘步骤一：换算成摩尔’，‘步骤二：使用摩尔比’，‘步骤三：计算质量’。
9. Extend Your Answers with the IDEAL Framework | 用 IDEAL 框架拓展作答
High-mark questions in IB Paper 2 and AQA extended-response items demand linking ideas. Use the IDEAL mnemonic: Identify the concept, Describe the mechanism or process, Explain the cause and effect, Apply to the specific example provided, and Link back to the question. For example, a question on the greenhouse effect should move from molecular absorption to global temperature rise to consequences. IB marks explicitly for ‘quality of conclusion’, so finish with a justified judgement when the question asks ‘evaluate’.
IB 试卷二和 AQA 扩展题的高分项要求关联多个观点。使用 IDEAL 记忆法：Identify（识别概念），Describe（描述机制或过程），Explain（解释因果关系），Apply（应用到具体实例），Link（回扣问题）。例如，关于温室效应的问题，要从分子吸收谈至全球升温再至后果。IB 明确评估‘结论的质量’，因此当题目要求‘评估’时，结尾要给出有论据的判断。
10. Exploit Official Resources and Past Papers | 善用官方资源与历年真题
The subject guide for IB and the AQA specification are your ultimate checklists. For IB, the ‘statements of inquiry’ and ‘essential ideas’ signal exactly what can be examined. For AQA, the specification references show which practical skills are assessed. Past papers should be used strategically: do a timed mock, mark it strictly using the mark scheme, then create a topic-by-topic gap analysis. Spend the next few days plugging the weakest areas before attempting another full paper.
IB 的学科指南和 AQA 的 specification 是你最根本的清单。IB 的‘探究声明’和‘核心观念’直接指明可考内容。AQA 的 specification 引用则告诉你哪些实验技能会被评估。历年真题要策略性地使用：限时模拟，严格按评分标准批改，然后制作专题化的差距分析表。在尝试下一整份试卷之前，花几天时间弥补最薄弱的环节。
11. Collaborative Revision and Self-Quizzing | 小组复习与自我检测
Explaining a concept to a peer is one of the most effective ways to consolidate learning. Organise a study group where each member teaches a sub-topic – such as redox reactions or the nephron – to the rest. Afterwards, use rapid-fire quizzing: one person asks definitions, the other answers within 15 seconds. Digital tools like flashcard apps are helpful, but writing by hand strengthens retention. For IB students, discuss IA experiments to rehearse evaluation language.
向同伴解释一个概念是巩固学习最有效的方式之一。组织学习小组，每个成员向其他人讲解一个子主题——如氧化还原反应或肾单位。之后进行快速互测：一人提问定义，另一人在 15 秒内作答。闪卡 App 等数字工具很有帮助，但手写更能强化记忆。对 IB 学生来说，讨论 IA 实验还能练习评估类表述。
12. The Night Before and Morning Of: A Calm Routine | 考前之夜与当天清晨：冷静流程
Last-minute cramming rarely helps. The night before, review your one-page ‘pitfall list’ and the key equations, then stop. Pack your equipment – clear pencil case, multiple pens, approved calculator with fresh batteries – and lay out your ID. Aim for 7–8 hours of sleep. On the morning, eat a balanced breakfast and arrive early. While waiting, read something unrelated to science to warm up your reading speed. Walk into the hall breathing slowly and remind yourself: ‘I have prepared, I know how to answer, and I will manage my time.’
临时抱佛脚往往适得其反。考前一晚，浏览一遍你的‘陷阱清单’和关键公式，然后停下。收拾好考试用具——透明铅笔盒、多支笔、装上新电池的合规计算器——并把证件放在显眼处。保证 7–8 小时睡眠。考试当天清晨，吃好早餐，提前到达。等待时读些与科学无关的内容，预热阅读速度。走进考场时缓慢呼吸，提醒自己：‘我已做好准备，我知道如何作答，我会管理好时间。’
Published by TutorHao | Science Revision Series | aleveler.com
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