📚 IB Calculator Use in Examinations 2020 | 2020 年 IB 考试计算器使用规定
In 2020, IB calculator rules remained a decisive part of exam preparation, even as many May 2020 sessions were cancelled and internal assessment routes were used. Knowing when to switch on a graphing calculator, which functions are banned, and how to reset stored data can mean the difference between smooth exam performance and a rules violation.
2020 年，IB 计算器规则依然是备考的重要组成部分，尽管当年 5 月许多考试被取消、成绩评定转向内部评估。清楚何时使用图形计算器、哪些功能被禁止、如何清除存储数据，可能直接影响考生能否顺利应考、是否违反考试规定。
1. Overview of IB Calculator Policy | IB 计算器政策概述
The IB allows a limited range of graphing display calculators (GDC) in most externally assessed mathematics and science papers, but the exact permission depends on the subject guide and the year of the candidate's assessment.
IB 在大多数外部评估的数学和科学试卷中允许使用限定范围的图形显示计算器（GDC），但具体是否允许取决于学科指南和考生所属的评估年份。
For the 2020 examination cycle, candidates who still sat papers in November 2020 were expected to follow the 2018-2020 calculator regulations, while May 2020 candidates had no written examinations and therefore no calculator-based paper.
对于 2020 年考试周期，仍参加 2020 年 11 月考试的考生需遵守 2018-2020 年计算器规定；而 2020 年 5 月考生因无笔试，因此不涉及带计算器的试卷。
The central principle is that a calculator must be a tool for numerical computation and graph display, not a device that gives an unfair symbolic algebra advantage.
核心原则是：计算器应当是数值计算和图形显示的工具，而不是能带来不公平的符号代数优势的设备。
2. Why the 2020 Rulebook Matters | 为什么 2020 年规则手册很重要
Even though May 2020 examinations were cancelled worldwide, the November 2020 session still operated under standard IB invigilation rules, including strict calculator checks.
尽管 2020 年 5 月全球考试被取消，2020 年 11 月考试仍按标准 IB 监考规则进行，包括严格的计算器检查。
Students who transfer rules from the old syllabus to the new Mathematics: Analysis and Approaches or Mathematics: Applications and Interpretation courses often assume every paper allows a GDC. That assumption can be costly.
如果学生把旧大纲的规则直接套用到新数学课程——数学：分析与方法或数学：应用与解释——往往会误以为每张试卷都允许 GDC。这一错误假设可能代价很大。
The 2020 rulebook also clarifies calculator use for the internally assessed exploration, where GDC screenshots, regression output and graph images are acceptable but full calculator-generated explanations are not enough.
2020 年规则手册也明确了内部评估探索（IA）中的计算器使用：可以接受 GDC 截图、回归结果和图像，但仅靠计算器生成的解释是不够的。
3. Permitted Calculator Types | 允许使用的计算器类型
IB does not publish a single fixed model list, but it requires a "graphic display calculator" that can plot functions, calculate numerical derivatives and integrals, and handle statistical distributions.
IB 并未发布单一固定型号列表，但要求使用"图形显示计算器"，即能够绘制函数图像、计算数值导数和积分、处理统计分布的计算器。
Commonly used GDC models include the Texas Instruments TI-84 Plus CE, TI-Nspire CX (non-CAS), Casio fx-CG50, and other models that do not include a Computer Algebra System.
常用的 GDC 型号包括德州仪器 TI-84 Plus CE、TI-Nspire CX（非 CAS 版本）、Casio fx-CG50，以及其他不包含计算机代数系统的型号。
Scientific calculators are adequate for some non-mathematics group 4 papers, but Mathematics papers that allow a calculator normally require a GDC with graphing capability.
科学计算器对于某些第4学科组非数学试卷可能够用，但允许使用计算器的 IB 数学试卷通常要求具备绘图功能的 GDC。
4. Prohibited Features and Devices | 禁止的功能与设备
As a rule, any calculator with Computer Algebra System (CAS) capability is not permitted in IB examinations unless the specific subject guide explicitly states otherwise, and no current IB mathematics guide does so for written papers.
一般来说，任何具备计算机代数系统（CAS）功能的计算器都不允许在 IB 考试中使用，除非特定学科指南明确允许；而目前没有任何 IB 数学书面试卷指南这样做。
Devices with wireless communication, internet access, external storage, cameras, or QWERTY keyboards are also banned because they can compromise assessment security.
带有无线通信、互联网接入、外部存储、摄像头或全键盘的设备也被禁止，因为它们可能损害评估安全性。
Features such as a text editor used to store revision notes, or apps that solve equations symbolically step by step, must be removed or disabled before the invigilator checks the device.
用于存储复习笔记的文本编辑器，或能逐步符号求解方程的应用等功能，必须在监考员检查前删除或禁用。
5. Paper 1 vs Paper 2 Rules | 试卷一与试卷二规则
Under the pre-2021 mathematics guides, Mathematics SL and Mathematics HL Paper 1 were strictly no-calculator papers, while Paper 2 allowed a GDC.
在 2021 年前的数学指南中，数学 SL 和数学 HL 试卷一严格禁止使用计算器，试卷二允许使用 GDC。
For Mathematics Studies Standard Level, Paper 1 was a calculator paper and Paper 2 also allowed a GDC, which is why candidates must check the exact front cover instruction for their own subject and level.
对于数学研究标准水平，试卷一可以使用计算器，试卷二也允许 GDC，因此考生必须核对自己学科和水平的试卷封面具体说明。
The front cover of each IB paper states "A graphic display calculator is required for this paper" or "A calculator is not permitted for this paper". Candidates must obey that statement, not their memory of a similar paper.
每份 IB 试卷封面都会写明"本试卷要求使用图形显示计算器"或"本试卷不允许使用计算器"。考生必须遵守该说明，而不是凭记忆参照类似试卷。
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