Year 7 CAIE Science: Paper Writing Framework & Sample | Year 7 CAIE 科学：论文写作框架与范文

📚 Year 7 CAIE Science: Paper Writing Framework & Sample | Year 7 CAIE 科学：论文写作框架与范文

Writing a science paper at Year 7 level is about learning to structure your ideas clearly using the scientific method. This guide breaks down a simple but effective framework and provides a full sample based on a typical experiment, helping you understand each section’s purpose and how to express your thinking in clear English.

在 Year 7 阶段撰写科学论文，关键在于学会用科学方法清晰地组织你的想法。本指南将拆解一个简单但有效的写作框架，并提供一个基于典型实验的完整范文，帮助你理解每个部分的目的，以及如何用清晰的英语表达你的思考。

1. The Purpose of a Science Paper | 科学论文的目的

A science paper communicates what you investigated, how you did it, what you found and what it means. It is not just about getting a correct answer; it is about showing your understanding of the scientific process. Every section has a clear job, and once you know the framework, you can apply it to any investigation.

科学论文要传达你研究了什么、是如何研究的、发现了什么以及这些发现意味着什么。它不仅仅是为了得出正确答案，更是为了展示你对科学过程的理解。每个部分都有明确的任务，一旦掌握了这个框架，你就能把它应用到任何一项探究中。

2. Title and Aim | 标题与目的

Your title should be a clear statement of what you investigated. It often starts with ‘Investigating how…’ or ‘The effect of… on…’. The aim is a single sentence that states exactly what you wanted to find out. Use words like ‘To investigate…’ or ‘To determine…’.

标题应该清晰陈述你研究了什么，常以’探究…如何…’或’…对…的影响’开头。目的是一句话，准确说明你想查明什么，使用’为了探究…’或’为了确定…’这样的表述。

Example:

Title: Investigating How the Length of a Pendulum Affects Its Swing Time
Aim: To investigate the relationship between the length of a pendulum and the time taken for one complete swing.

示例：

标题：探究摆长如何影响摆动时间
目的：探究摆长与完成一次全摆动所需时间之间的关系。

3. Hypothesis and Variables | 假设与变量

A hypothesis is a prediction based on scientific reasoning. It often uses the format: ‘If the [independent variable] is increased, then the [dependent variable] will [change], because [scientific reason].’ You must also list your independent variable (the one you change), dependent variable (the one you measure) and the control variables (the ones you keep the same to ensure a fair test).

假设是基于科学推理的预测，常使用如下格式：’如果[自变量]增大，那么[因变量]将[如何变化]，因为[科学理由]。’你还必须列出你的自变量（你改变的量）、因变量（你测量的量）和控制变量（为保持公平测试而保持不变的量）。

Example:

Hypothesis: If the length of the pendulum increases, the time for one swing will increase, because a longer string means the pendulum bob has a greater distance to travel.

Independent variable: Length of pendulum (cm)
Dependent variable: Time for 10 complete swings, then ÷10 to get period (s)
Control variables: Mass of bob, angle of release, same stopwatch, same room

示例：

假设：如果摆长增加，那么摆动一次所需的时间将会增加，因为更长的细线意味着摆锤需要行进更长的距离。

自变量：摆的长度（厘米）
因变量：10次完整摆动的时间，然后除以10得到周期（秒）
控制变量：摆锤质量、释放角度、同个秒表、同一房间

4. Apparatus and Materials | 仪器与材料

List all equipment and materials used in a bullet-point format. Be precise about sizes or quantities. This allows someone else to repeat your experiment exactly. Include measuring tools and any special items like a clamp stand or protractor.

用项目符号列出所有使用的设备和材料，精确注明尺寸或数量。这能让别人精确复现你的实验。包括测量工具以及任何特殊物品，如铁架台或量角器。

Clamp stand, boss and clamp
String (approximately 100 cm)
Metal bob (mass: 50 g)
Metre ruler (±0.1 cm)
Stopwatch (±0.01 s)
Protractor
Scissors

铁架台、铁夹和铁圈
细线（约100厘米）
金属摆锤（质量：50克）
米尺（±0.1厘米）
秒表（±0.01秒）
量角器
剪刀

5. Method: Step-by-Step Procedure | 方法：分步操作

Write the method as a numbered list of clear instructions, in the past tense if you have already done the experiment. Include exactly what you did, how you measured, and any safety precautions. Mention repeats: doing the experiment more than once improves reliability.

将方法写成一份清晰的编号指令列表，如果已完成实验则使用过去时态。包括你具体做了什么、如何测量，以及任何安全预防措施。提及重复实验：多次进行实验可提高可靠性。

The clamp stand was set up securely on a bench and the string was attached to the clamp.
The string was cut to a length of 20 cm from the point of suspension to the centre of the bob.
The bob was pulled back to a small angle (about 10°, measured using the protractor) and released.
The time for 10 complete swings was measured using the stopwatch. This was recorded.
The pendulum was then stopped. The time for 10 swings was divided by 10 to calculate the period (time for one swing).
Steps 2–5 were repeated for string lengths of 30, 40, 50, 60 and 70 cm.
The entire procedure was carried out three times for each length, and an average period was calculated.

将铁架台稳固地放置在实验台上，把细线系在铁夹上。
将细线剪成从悬挂点到摆锤中心长度为20厘米的一段。
将摆锤向后拉至一个小角度（约10°，用量角器测量），然后释放。
用秒表测量10次完整摆动的时间，并记录下来。
然后停止摆动。将10次摆动的时间除以10，计算出周期（一次摆动的时间）。
对30厘米、40厘米、50厘米、60厘米和70厘米的线长重复步骤2至5。
每个长度重复整个实验过程三次，计算平均周期。

6. Risk Assessment and Safety | 风险评估与安全

A simple risk assessment shows you have thought about safety. Identify any potential hazards and how you minimised risk. This is a key part of scientific writing, even for classroom experiments.

简单的风险评估表明你已经考虑过安全问题。指出所有潜在危险以及你如何将风险降至最低。这是科学写作的关键部分，即使对课堂实验而言也是如此。

Hazard / 危险	Risk / 风险	How to manage it / 控制措施
Swinging bob	Could hit someone in the face	Stand well back when releasing; keep observers at a safe distance
Clamp stand	Could topple over if not stable	Ensure base is fully on the bench and tightened properly
Scissors	Sharp; could cut skin	Handle carefully and pass with handle towards person

7. Results: Recording Data | 结果：记录数据

Present your raw data clearly in a table. The independent variable goes in the first column and the dependent variable in the second (and any repeats). Include units in the column headings and use consistent decimal places. Calculate averages if you have repeats.

将你的原始数据清晰地呈现在表格中。自变量放在第一列，因变量放在第二列（以及任何重复实验数据）。在列标题中注明单位，并使用一致的小数位数。如果有重复实验，计算平均值。

Length of pendulum / cm 摆长 / 厘米	Time for 10 swings (Trial 1) / s 10次摆动时间（试验1）/ 秒	Time for 10 swings (Trial 2) / s 10次摆动时间（试验2）/ 秒	Time for 10 swings (Trial 3) / s 10次摆动时间（试验3）/ 秒	Average time for 10 swings / s 10次摆动平均时间 / 秒	Period (time for 1 swing) / s 周期（1次摆动时间）/ 秒
20.0	8.94	9.12	8.88	8.98	0.90
30.0	11.01	11.10	10.95	11.02	1.10
40.0	12.65	12.78	12.70	12.71	1.27
50.0	14.20	14.35	14.30	14.28	1.43
60.0	15.60	15.72	15.66	15.66	1.57

8. Graph and Data Presentation | 图表与数据展示

For many experiments, a graph helps to see patterns. Plot the independent variable on the x-axis (horizontal) and the dependent variable on the y-axis (vertical). Use a line of best fit if the points suggest a smooth relationship. Give the graph a clear title and label both axes with units.

对于许多实验，图表有助于观察规律。将自变量画在x轴（横轴），因变量画在y轴（纵轴）。如果数据点显示出平滑关系，则使用最佳拟合线。给图表加上清晰的标题，并为两条坐标轴标注单位。

In the sample, you would plot ‘Length of pendulum / cm’ on the x-axis and ‘Period / s’ on the y-axis. The graph should show a smooth curve that rises, indicating that as length increases, the period also increases, but not in a straight line.

在示例中，你会把’摆长/厘米’画在x轴上，’周期/秒’画在y轴上。图形应显示一条平滑上升的曲线，表明随着摆长增加，周期也增加，但不是直线关系。

9. Conclusion: What Did You Find Out? | 结论：你发现了什么？

The conclusion must answer the aim directly. State whether your hypothesis was supported or not, and summarise the trend you observed. Do not bring in new data here; just use the results to form a statement about the relationship between variables.

结论必须直接回应研究目的。说明你的假设是否得到支持，并总结你观察到的趋势。不要在此处引入新数据；只需利用结果对变量之间的关系做出陈述。

Sample conclusion: As the length of the pendulum increased, the period also increased. The results support the hypothesis. The relationship is not directly proportional, as the graph is a curve rather than a straight line through the origin. This happened because a longer string gives a greater path for the bob to travel, and the restoring force is weaker, so the swing takes longer.

示例结论：随着摆长增加，周期也增加了。结果支持假设。这一关系不是正比例关系，因为图形是一条曲线，而非过原点的直线。之所以出现这种情况，是因为更长的细线使摆锤需经过更长的路径，且回复力更弱，因此摆动所需时间更长。

10. Evaluation: Looking Back at Your Method | 评估：回顾你的方法

An evaluation reflects on how reliable your experiment was. Identify any sources of error, explain how they might have affected the results, and suggest realistic improvements. This shows critical thinking, an important skill in science.

评估反思你的实验可靠性。指出任何误差来源，解释它们可能如何影响了结果，并提出切实可行的改进建议。这体现了批判性思维，是科学中的重要技能。

Example evaluation points:

The angle of release was measured by eye using a protractor, which is not accurate. A digital protractor would improve accuracy.
Human reaction time when starting and stopping the stopwatch can cause random errors. Using a light gate and electronic timer would eliminate this.
The clamp stand may have wobbled slightly on some trials; making sure the bench is completely level would help.
Only three repeats were done per length. More repeats would give a more reliable average.
The investigation only went up to 70 cm. Using longer lengths could show if the pattern continues.

示例评估要点：

释放角度是用量角器目测的，不够精确。使用数字量角器可提高准确度。
在启动和停止秒表时，人的反应时间会导致随机误差。使用光闸和电子计时器可消除这一误差。
铁架台在某些试验中可能轻微晃动；确保实验台完全水平会有所帮助。
每个长度只重复了三次。更多重复次数会得出更可靠的平均值。
探究只进行到70厘米。使用更长的长度可以检验这一规律是否继续成立。

11. Putting It All Together: A Complete Sample Paper | 整合起来：完整范文

Below is a shortened version of how the sections fit together in a real paper. You can use this as a model for writing your own investigation reports.

以下是各板块在真实论文中如何组合的简化版。你可以以此作为撰写自己探究报告的范例。

Title: Investigating How the Length of a Pendulum Affects Its Swing Time
Aim: To investigate the relationship between the length of a pendulum and the period of one swing.
Hypothesis: If the length increases, the period will increase because the pendulum bob must travel a longer path.
Variables: Independent – length (20, 30, 40, 50, 60, 70 cm); Dependent – period (s); Control – mass of bob (50 g), angle of release (10°), same stopwatch.
Apparatus: clamp stand, string, bob, metre ruler, stopwatch, protractor.
Method: The pendulum was set up and the time for 10 swings was recorded for each length. This was repeated three times, and the average period was calculated.
Results: Table showed period increased from 0.90 s at 20 cm to 1.57 s at 70 cm. Graph was a smooth rising curve.
Conclusion: The period increases with length. Hypothesis supported. Relationship is not directly proportional.
Evaluation: Reaction time and angle measurement were main errors. Using a light gate and digital protractor would improve accuracy.

标题：探究摆长如何影响摆动时间
目的：探究摆长与单摆摆动周期之间的关系。
假设：如果摆长增加，周期将增加，因为摆锤必须经过更长的路径。
变量：自变量——摆长（20、30、40、50、60、70厘米）；因变量——周期（秒）；控制变量——摆锤质量（50克）、释放角度（10°）、同个秒表。
仪器：铁架台、细线、摆锤、米尺、秒表、量角器。
方法：安装好单摆，记录每个长度下10次摆动的时间。重复三次，计算出平均周期。
结果：表格显示周期从20厘米时的0.90秒增加到70厘米时的1.57秒。图形是一条平滑上升的曲线。
结论：周期随摆长增加而增加。假设得到支持。关系不是正比例关系。
评估：反应时间和角度测量为主要误差。使用光闸和数字量角器可提高准确度。

12. Quick Checklist for Your Own Paper | 你自己的论文快速检查清单

Before handing in your science paper, run through this checklist to make sure you have included all the required sections and used correct scientific language.

在提交你的科学论文之前，过一遍这份检查清单，确保你包含了所有必需的部分，并使用了正确的科学语言。

Does the title clearly state what was investigated?
Is the aim a single, precise sentence?
Have you written a hypothesis using ‘If… then… because…’?
Are the independent, dependent and control variables identified correctly?
Are all materials listed with quantities?
Is the method written in a logical, numbered list?
Have you included a risk assessment?
Is your results table neat, with headings, units and averages?
Have you drawn a graph with labelled axes and a line of best fit where appropriate?
Does your conclusion answer the aim and mention the hypothesis?
Have you evaluated the method and suggested improvements?
Do all sentences use past tense and the passive voice where suitable (e.g. ‘The time was measured’ rather than ‘I measured the time’)?

标题是否清楚陈述了研究内容？
目的是否为一句精确的话？
你是否用’如果…那么…因为…’写出了假设？
自变量、因变量和控制变量是否被正确识别？
所有材料是否都列出了数量？
方法是否以合乎逻辑的编号列表写成？
你是否包含了风险评估？
你的结果表格是否整洁，有标题、单位和平均值？
你是否画了图表，坐标轴有标注，并在恰当处画了最佳拟合线？
你的结论是否回应了研究目的并提及假设？
你是否评估了方法并提出了改进建议？
所有句子是否在合适之处使用了过去时态和被动语态（例如，’时间被测量’，而不是’我测量了时间’）？

Published by TutorHao | Science Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）

Year 7 CAIE Science: Paper Writing Framework & Sample | Year 7 CAIE 科学：论文写作框架与范文