📚 Summer Preview and Transition Course for KS3 WJEC Computer Science | KS3 WJEC 计算机：暑期预习与衔接课程
Moving from primary-school ICT to Key Stage 3 Computing can feel like a big jump. The WJEC KS3 Computer Science curriculum introduces you to the core ideas of computational thinking, programming, and how computers work. This summer preview and transition course is designed to help you build confidence before September, so you can start Year 7 ready to explore topics like algorithms, binary, and Python with a clear mind.
从小学的信息通信技术（ICT）过渡到关键阶段3的计算机科学，可能会让你感觉跨度不小。WJEC KS3 计算机科学课程将带你接触计算思维、编程以及计算机工作原理等核心概念。这份暑期预习与衔接课程旨在帮助你在九月份之前建立信心，让你在进入七年级时能够从容地探索算法、二进制和 Python 等课题。
1. What Makes WJEC KS3 Computing Different? | WJEC KS3 计算机有什么不同？
Unlike the general ICT you may have done in primary school, WJEC KS3 Computing is built around three pillars: computer science theory, digital literacy, and programming. You will begin to think like a computer scientist by breaking down problems, spotting patterns, and designing step-by-step solutions. The course also places strong emphasis on understanding how hardware and software interact, and on becoming a responsible digital citizen in Wales and beyond.
与你在小学接触过的一般信息通信技术不同，WJEC KS3 计算机课程围绕三大支柱构建：计算机科学理论、数字素养和编程。你将开始像计算机科学家一样思考，学会分解问题、识别模式并设计分步解决方案。课程还非常重视理解硬件与软件的交互方式，以及如何成为威尔士乃至全球范围内负责任的数字公民。
In WJEC’s approach, you will not just use technology – you will create with it. Expect to write your first small programs early on, often using block-based tools like Scratch before moving to text-based languages such as Python. The curriculum also introduces you to key concepts in e-safety, data representation, and the history of computing, giving you a broad foundation for GCSE and beyond.
在 WJEC 的教学理念中，你不仅要使用技术，还要用技术进行创造。你需要做好准备，尽早开始编写自己的第一个小程序，通常会先用 Scratch 这类图形化编程工具，然后再过渡到 Python 等文本编程语言。课程还会向你介绍网络安全、数据表示和计算机发展史等关键概念，为你日后学习 GCSE 以及更高层次的课程打下坚实基础。
2. Getting into the Computational Thinking Mindset | 进入计算思维的思维模式
Computational thinking is the heart of WJEC Computer Science. It means solving problems in a way that a computer could carry out. You will practise decomposition (breaking a big problem into smaller parts), pattern recognition, abstraction (focusing on the important details and ignoring the rest), and algorithm design. These skills are not only useful in programming – they help in maths, science, and everyday life too.
计算思维是 WJEC 计算机科学的核心。它是指用计算机能够执行的方式来解决问题。你将练习分解（把大问题拆分成小部分）、模式识别、抽象（专注于重要细节，忽略无关信息）以及算法设计。这些技能不仅在编程中有用，对数学、科学乃至日常生活也大有裨益。
A good summer exercise is to describe a simple everyday task – like making a sandwich or brushing your teeth – as a precise sequence of steps. Then ask someone to follow your instructions exactly. You will quickly see how easily a computer can misunderstand vague commands, and why clear, unambiguous steps are essential.
一个很好的暑期练习是：把一项简单的日常任务——比如做三明治或刷牙——描述为一串精确的步骤，然后请别人严格按照你的指令去执行。你很快就会发现，模糊不清的命令很容易让计算机产生误解，从而明白清晰、无歧义的步骤是多么重要。
3. The Computer System: More Than a Box | 计算机系统：不止是一个盒子
Before you start coding, it helps to understand what is inside the machine. At KS3, WJEC introduces input devices (keyboard, mouse, microphone), output devices (monitor, speakers, printer), and storage devices (hard drive, SSD, USB stick). You will also learn the difference between hardware and software, and why the CPU is often called the ‘brain’ of the computer.
在你开始编程之前，先了解一下机器内部构造会很有帮助。在 KS3 阶段，WJEC 会介绍输入设备（键盘、鼠标、麦克风）、输出设备（显示器、扬声器、打印机）和存储设备（硬盘、固态硬盘、U盘）。你还将学习硬件与软件的区别，以及为什么 CPU 常被称为计算机的“大脑”。
Try opening up an old, safe electronic device (with adult supervision) or watch a virtual computer build video. Identify the motherboard, RAM sticks, and power supply. Even a simple diagram labelled with words like ‘input’, ‘process’, ‘output’, and ‘storage’ will give you a mental model that makes later lessons much easier to follow.
可以尝试（在成人监督下）拆开一台老旧、安全的电子设备，或者观看虚拟装机的视频。找出主板、内存条和电源。即便是画一张简单的示意图，标注上“输入”“处理”“输出”和“存储”等字眼，也能在脑中建立起一个模型，让后续的课程理解起来轻松得多。
4. Binary and Data Representation Made Simple | 二进制与数据表示轻松入门
Computers do not understand words or numbers the way we do – they use binary, a number system made up of only 1s and 0s. WJEC KS3 expects you to be able to explain why computers use binary, convert small binary numbers to denary (our usual base‑10 numbers), and talk about how text, images, and sound can be represented digitally.
计算机并不像我们一样理解文字或数字——它们使用二进制，一种仅由 1 和 0 组成的数制。WJEC KS3 要求你能够解释计算机为什么使用二进制、将较小的二进制数转换为十进制（我们日常使用的基数为10的数字），并能讨论文本、图像和声音是如何数字化表示的。
A fun summer activity is to create binary flashcards. Write the place values: 128, 64, 32, 16, 8, 4, 2, 1. Pick a denary number up to 255 and challenge yourself to turn on (1) or off (0) the right combination of bits. For example, the number 13 becomes 00001101 in binary. This simple game builds fluency before you even step into the classroom.
一项有趣的暑期活动是制作二进制闪卡。写出位值：128, 64, 32, 16, 8, 4, 2, 1。选择一个不超过 255 的十进制数字，挑战自己用 1（开）或 0（关）的正确组合来表示它。例如，数字 13 在二进制中就是 00001101。这个简单的游戏能让你在踏入教室之前就培养出熟练度。
5. Introduction to Programming with Scratch | 用 Scratch 入门编程
Many WJEC classrooms use Scratch as a gentle first programming language. Scratch lets you drag and drop blocks to build programs, so you can focus on the logic without worrying about typing mistakes. You will learn key concepts such as loops (repeat), conditional statements (if-then-else), and variables – all while creating animations or simple games.
许多 WJEC 课堂上都会采用 Scratch 作为温和的入门编程语言。Scratch 允许你通过拖放积木块来构建程序，因此你可以专注于逻辑，而不必担心打字错误。你将学习循环（重复执行）、条件语句（如果-那么-否则）以及变量等关键概念——而这一切都是通过制作动画或简单游戏来实现的。
Set yourself a mini-project over the summer: make a cat-collecting game where a sprite moves with arrow keys and collects objects to increase a score. This naturally introduces event handling, sensing blocks, and variables for keeping score. If you get stuck, Scratch’s online community and ‘see inside’ feature let you peek at other people’s projects for inspiration.
在暑假给自己设定一个迷你项目：制作一个收集猫咪的游戏，让角色通过方向键移动并收集物品来增加分数。这自然会引入事件处理、侦测积木以及用于记分的变量。如果遇到困难，Scratch 的在线社区和“观看程序内部”功能可以让你查看别人的项目，从中寻找灵感。
6. Stepping Up to Text-Based Coding in Python | 迈向文本编程：Python 初探
As you progress through KS3, you will start writing code in Python – a real-world programming language used by scientists, web developers, and AI engineers. The first skills include using the print() function to display messages, taking input from the user with input(), and storing information in variables. You will also meet simple data types like strings and integers.
随着你在 KS3 阶段的深入，你将开始使用 Python 编写代码——这是一门真实的编程语言，被科学家、网络开发者和人工智能工程师广泛使用。你需要掌握的第一批技能包括使用 print() 函数显示信息、用 input() 获取用户输入，以及将信息存储在变量中。你还会接触到字符串和整数等简单的数据类型。
If you feel ready, install Python (or use a free online editor like Replit) and experiment with a simple script. Try writing a program that asks for a name and age, then calculates the year when the person will turn 100. Keep it playful – making small programs that do something funny or personal is the best way to stay motivated.
如果你觉得准备好了，可以安装 Python（或使用 Replit 等免费在线编辑器），尝试编写一个简单的脚本。试着写一个程序，询问姓名和年龄，然后计算出这个人将在哪一年年满 100 岁。保持趣味性——编写能做出有趣或有个人特色的东西的小程序，是保持学习动力的最佳方法。
7. Algorithms You Already Know | 你早已熟悉的算法
An algorithm is simply a set of step-by-step instructions for completing a task. You already use algorithms every day – a recipe, a morning routine, or even the rules for a board game are all algorithms. In computing, algorithms must be precise, finite (they must end), and effective (each step must be doable).
算法不过是一套用于完成某项任务的分步指令。你每天都在使用算法——食谱、晨间流程，甚至棋盘游戏的规则都是算法。在计算机科学中，算法必须精确、有限（必须有终点）且有效（每一步都必须是可操作的）。
WJEC KS3 introduces you to common algorithms such as linear search (looking for a card in a deck one by one) and bubble sort (swapping adjacent items until the list is in order). You can practise these offline with playing cards or numbered pieces of paper. Physically acting out an algorithm makes the logic concrete and unforgettable.
WJEC KS3 会向你介绍一些常见算法，比如线性搜索（逐一翻找一副牌中的某张牌）和冒泡排序（交换相邻项，直到列表有序）。你可以用扑克牌或编了号的纸条在离线环境下练习这些算法。通过肢体动作把算法表演出来，能让逻辑变得具体且令人难忘。
8. Staying Safe and Respectful Online | 安全、文明上网
Digital citizenship is woven throughout the WJEC course. You will discuss how to protect your personal data, recognise phishing and scams, and understand the impact of your digital footprint. E‑safety is not about fear – it is about making informed choices and treating others with respect in online communities.
数字公民意识贯穿于整个 WJEC 课程之中。你将讨论如何保护个人数据，识别钓鱼和诈骗信息，并理解数字足迹产生的影响。网络安全不是为了制造恐惧——而是为了让你能够在网络社区中做出明智的选择，并以尊重的态度对待他人。
This summer, pay attention to the privacy settings on your favourite apps and games. Ask yourself: what information am I sharing, and with whom? Consider creating a family agreement about screen time and online behaviour. These small reflections prepare you for the classroom discussions and projects on responsible technology use.
这个暑假，请留意你常用应用和游戏中的隐私设置。问问自己：我正在分享哪些信息？与谁分享？可以考虑制定一份家庭协议，约定屏幕使用时间和在线行为规范。这些小小的思考能帮助你为课堂上关于负责任地使用技术的讨论和项目做好准备。
9. The Difference Between the Internet and the World Wide Web | 互联网与万维网的区别
Many people use the terms ‘Internet’ and ‘World Wide Web’ as if they mean the same thing, but WJEC expects you to tell them apart. The Internet is the global network of connected computers that can send and receive data. The World Wide Web (WWW) is a service that runs on top of the Internet, consisting of web pages accessed through a browser using protocols like HTTP.
很多人把“互联网”（Internet）和“万维网”（World Wide Web）这两个词混用，仿佛它们是一回事，但 WJEC 要求你能够加以区分。互联网是由相互连接的计算机组成的全球网络，可以发送和接收数据。而万维网是运行在互联网之上的一种服务，由通过浏览器使用 HTTP 等协议访问的网页构成。
A helpful analogy is to think of the Internet as the roads and motorways, while the World Wide Web is the lorries carrying packages of information (web pages, emails, streaming videos) along those roads. Other services like email and online gaming also use the Internet but are not the Web. Understanding this hierarchy will serve you well when you study networks in more detail.
一个有用的类比是：把互联网想象成道路和高速公路，而万维网则是在这些道路上运送信息包裹（网页、电子邮件、流媒体视频）的货车。电子邮件和在线游戏等其他服务同样使用互联网，但并不属于万维网。理解这种层级关系，在你将来更详细地学习网络知识时会很有帮助。
10. Designing and Evaluating Digital Products | 数字产品的设计与评估
WJEC KS3 is not just about writing code; it also covers how to plan, create, and review digital artefacts such as websites, presentations, and simple applications. You will learn to consider the audience and purpose of a product, and to gather feedback to improve your designs. This mirrors real-life software development cycles.
WJEC KS3 课程不只有写代码，它还涵盖如何规划、创建和评估数字产品，比如网站、演示文稿以及简单的应用程序。你将学会考虑产品的受众和目的，并收集反馈来改进你的设计。这与真实的软件开发周期十分相似。
A perfect summer project is to plan a small revision website about a hobby you love. Sketch the layout, choose a colour scheme, and think about how a user would navigate between pages. Even if you do not code it fully, the planning document alone will teach you to think like a designer and give you a head start in digital literacy coursework.
一个绝佳的暑期项目是为你喜爱的某项爱好设计一个迷你复习网站。画出布局草图，选定配色方案，并思考用户如何在页面之间导航。即使没有完整地把代码写出来，单单这份设计文档就能教会你像设计师一样思考，让你在数字素养课程作业中抢占先机。
11. Building a Summer Study Routine That Sticks | 建立一个能坚持下去的暑期学习习惯
Consistency beats intensity. Instead of trying to learn everything in one week, aim for 20-30 minutes of computing-related activity three or four times a week. This could be coding in Scratch, playing a binary game, or watching a short video on how Wi‑Fi works. The goal is to keep your brain gently engaged without turning the holiday into another school term.
细水长流胜过一曝十寒。不要试图在一周之内学完所有内容，而是争取每周进行三到四次 20 到 30 分钟与计算机相关的活动。可以是 Scratch 编程，玩二进制游戏，或者观看一段关于 Wi‑Fi 工作原理的短视频。目标是以温和的方式让大脑保持参与感，而不是把假期变成另一个学期。
Create a simple checklist or sticker chart to track your progress. Include fun milestones like ‘Debugged my first program’ or ‘Explained binary to a family member’. Tangible rewards and a sense of accomplishment will keep you motivated right up to the first day of Year 7.
制作一张简单的检查清单或贴纸表来追踪你的进度。纳入一些有趣的里程碑，比如“调试成功我的第一个程序”或“向家人解释了二进制”。看得见的奖励和成就感会一直激励你，直到七年级开学的第一天。
12. Ready, Set, Compute! | 准备就绪，开启计算之旅！
You have now explored the key themes of the WJEC KS3 Computer Science course and gathered plenty of ideas for meaningful summer preparation. Remember that every expert was once a beginner who kept asking questions and trying things out. The most important resources are your curiosity and the willingness to experiment – coding errors are just learning opportunities in disguise.
现在，你已经探索了 WJEC KS3 计算机科学课程的关键主题，并收集了大量有意义暑期准备的点子。请记住，每一位专家都曾经是初学者，他们持续提问、不断尝试。最重要的资源是你的好奇心和勇于实验的精神——编程中的错误不过是乔装起来的学习机会罢了。
Keep a digital or paper notebook to jot down interesting computing facts, code snippets, and questions that pop up over the holidays. When September arrives, you will already speak the language of algorithms, binary, and blocks, and you will be ready to dive into the WJEC curriculum with excitement and confidence.
准备一本数码或纸质笔记本，随手记下假期里遇到的有趣计算机知识、代码片段和冒出来的疑问。当九月来临时，你早已深谙算法、二进制和编程积木的语言，准备好带着兴奋与自信投入到 WJEC 课程的学习当中了。
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