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A graphical user interface tool to teach plane curves in pandemic situations through a flipped classroom 通过翻转课堂教授大流行情况下平面曲线的图形用户界面工具
IF 0.3 Q4 EDUCATION, SCIENTIFIC DISCIPLINES Pub Date : 2024-07-10 DOI: 10.4102/pythagoras.v45i1.762
Atteeq Razzak
During the pandemic and lockdown situations of the last few years, we transitioned to online, physical, and hybrid education approaches at various times. We had difficulty teaching multiple calculus and analytical geometry units online. In light of the current situation, a graphical user interface (GUI) teaching tool has been developed to teach university students many plane curve modules through a flipped classroom. With a few inputs and a single click as output, these executable spreadsheets can assist physics and mathematics students in practising several principles of analytical geometry. Spreadsheets can readily draw planes in three-dimensional geometry due to their widespread use. Some online vector GUIs present the results; however, this GUI conveniently illustrates the plot. The well-designed user interface also helps create new questions with answer keys and gives access to the teachers of physics and mathematics, which can make online teaching very easy. The effectiveness of this GUI was checked through Kolmogorov-Smirnov and Shapiro-Wilk tests, and a good agreement has been found in the results.Contribution: This article contributes to Mathematics teaching through GUIs.
在过去几年的大流行和封锁情况下,我们在不同时期过渡到在线、实体和混合教育方法。我们在网上教授多个微积分和解析几何单元时遇到了困难。有鉴于此,我们开发了一种图形用户界面(GUI)教学工具,通过翻转课堂向大学生教授多个平面曲线模块。只需少量输入和单击输出,这些可执行的电子表格就能帮助物理和数学专业的学生练习解析几何的若干原理。由于电子表格的广泛使用,它们可以轻松绘制立体几何中的平面图。一些在线矢量图形用户界面可以显示结果,而本图形用户界面则可以方便地显示图形。精心设计的用户界面还有助于创建带有答案的新问题,并为物理和数学教师提供访问权限,从而使在线教学变得非常容易。通过 Kolmogorov-Smirnov 检验和 Shapiro-Wilk 检验检验了该图形用户界面的有效性,结果一致:本文为通过图形用户界面进行数学教学做出了贡献。
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引用次数: 0
Simplifying algebraic expressions with brackets: Insights into Grade 10 learners’ structure sense through a study of their errors 用括号简化代数表达式:通过研究 10 年级学生的错误,了解他们的结构意识
IF 1.2 Q3 Mathematics Pub Date : 2024-05-13 DOI: 10.4102/pythagoras.v45i1.783
Nadia M. Theba, Craig Pournara, Shikha Takker
Developing structure sense is an important part of learning algebra. We investigated learners’ structure sense of algebraic expressions involving brackets. This led us to propose the constructs surface structure sense and systemic structure sense. Using a random sample of 58 Grade 10 learners scoring above 40% in a test, we coded incorrect responses for surface and systemic structure errors. The initial analysis revealed that the presence of more brackets supports surface structure sense. However, learners overgeneralised the presence of brackets to represent multiplication in situations involving subtraction. The arrangement of brackets also led to errors in the order of operations. Further analysis suggested that regular application of procedures on familiar algebraic structures may give the illusion of systemic structure sense. We recommend that the teaching of algebraic expressions must emphasise what the arrangement of an expression means before focusing on how to operate on the expression.Contribution: The research contributes to mathematics teaching by suggesting teaching strategies to improve on learners’ understanding of the role of brackets in algebraic expressions, by considering the arrangement of the components in structures.
培养结构感是代数学习的重要组成部分。我们研究了学习者对涉及括号的代数表达式的结构感。由此,我们提出了表面结构感和系统结构感这两个概念。我们随机抽取了 58 名在一次测试中得分超过 40% 的 10 年级学生,对他们的错误回答进行了表面结构和系统结构错误的编码。初步分析表明,括号越多,表面结构感越强。然而,在涉及减法的情境中,学习者过度概括了括号的存在来表示乘法。括号的排列也导致了运算顺序的错误。进一步的分析表明,经常在熟悉的代数结构上应用程序可能会造成系统结构感的错觉。我们建议,代数表达式的教学必须先强调表达式排列的含义,然后再关注如何对表达式进行运算:本研究通过考虑结构中各组成部分的排列,提出了改善学习者对括号在代数表达式中的作用的理解的教学策略,从而为数学教学做出了贡献。
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引用次数: 0
Comparing the finite and infinite limits of sequences and functions: A mathematical and phenomenological analysis and its implications in Spanish textbooks 比较序列和函数的有限极限和无限极限:数学和现象学分析及其对西班牙语教科书的影响
IF 1.2 Q3 Mathematics Pub Date : 2024-03-29 DOI: 10.4102/pythagoras.v45i1.774
Mónica Arnal-Palacián, Francisco J. Claros-Mellado, M. T. Sánchez-Compaña
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引用次数: 0
Relating motivation and learning strategies to algebra course results in a foundation programme 在基础课程中将学习动机和学习策略与代数课程成绩联系起来
IF 1.2 Q3 Mathematics Pub Date : 2024-01-29 DOI: 10.4102/pythagoras.v45i1.781
W. Baumgartner, Erica D. Spangenberg, Geoffrey V. Lautenbach
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引用次数: 0
Developing undergraduate engineering mathematics students’ conceptual and procedural knowledge of complex numbers using GeoGebra 使用 GeoGebra 开发本科工程数学学生的复数概念和程序知识
IF 1.2 Q3 Mathematics Pub Date : 2023-12-21 DOI: 10.4102/pythagoras.v44i1.763
Philemon M. Seloane, Sam Ramaila, Mdutshekelwa Ndlovu
This study explored the utilisation of GeoGebra as a modelling tool to develop undergraduate engineering mathematics students’ conceptual and procedural knowledge of complex numbers. This mission was accomplished by implementing GeoGebra-enriched activities, which provided carefully designed representational support to mediate between students’ initially developed conceptual and procedural knowledge gains. The rectangular and polar forms of the complex number were connected and merged using GeoGebra’s computer algebra systems and dynamic geometric systems platforms. Despite the centrality of complex numbers to the undergraduate mathematics curriculum, students tend to experience conceptual and procedural obstacles in mathematics-dependent physics engineering topics such as mechanical vector analysis and electric-circuit theory. The study adopted an exploratory sequential mixed methods design and involved purposively selected first-year engineering mathematics students at a South African university. The constructivist approach and Realistic Mathematical Education underpinned the empirical investigation. Data were collected from students’ scripts. Implementing GeoGebra-enriched activities and providing carefully designed representational support sought to enhance students’ conceptual and procedural knowledge of complex numbers and problem representational competence. The intervention additionally helped students to conceptualise and visualise a complex rectangular number. Implications for technology-enhanced pedagogy are discussed.Contribution: The article provides exploratory insights into the development of undergraduate engineering mathematics students’ conceptual and procedural knowledge of complex numbers using GeoGebra as a dynamic digital tool. Key findings from the study demonstrated that GeoGebra appears to be an effective modelling tool that can be harnessed to demystify the complexity of mathematics students’ conceptual and procedural knowledge of complex numbers.
本研究探讨了如何利用 GeoGebra 作为建模工具,来发展本科工程数学专业学生对复数的概念性和程序性知识。这项任务是通过实施 GeoGebra 丰富的活动来完成的,这些活动提供了精心设计的表征支持,在学生初步形成的概念性知识和程序性知识之间起到了中介作用。利用 GeoGebra 的计算机代数系统和动态几何系统平台,复数的矩形和极性形式被连接和合并。尽管复数在本科数学课程中占据核心地位,但在机械矢量分析和电路理论等依赖数学的物理工程课题中,学生往往会遇到概念和程序方面的障碍。本研究采用了探索性顺序混合方法设计,有目的地选取了南非一所大学工程数学专业的一年级学生作为研究对象。建构主义方法和现实数学教育是实证调查的基础。数据从学生的答卷中收集。实施 GeoGebra 丰富的活动并提供精心设计的表征支持,旨在提高学生对复数的概念性和程序性知识以及问题表征能力。此外,干预措施还有助于学生将复杂的矩形数概念化和可视化。文章讨论了技术强化教学法的意义:文章利用 GeoGebra 这一动态数字工具,对本科工程数学专业学生复数概念性和程序性知识的发展进行了探索性研究。研究的主要结果表明,GeoGebra 似乎是一种有效的建模工具,可用于消除数学专业学生对复数概念和程序知识的复杂性。
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引用次数: 0
Ascertaining Grade 10 learners’ levels of mathematical modelling competency through solving simultaneous equations word problems 通过解决同步方程文字题确定十年级学生的数学建模能力水平
IF 1.2 Q3 Mathematics Pub Date : 2023-12-08 DOI: 10.4102/pythagoras.v44i1.728
Rajendran Govender, Dzivaidzo Machingura
Possessing mathematical competence is a pre requisite for independently comprehending, understanding and applying all features of mathematical modelling in a particular setting. This research study thus explores the mathematical modelling competencies that Grade 10 learners exhibit while solving contextual problems in a mathematics learning and teaching context, with specific reference to using mathematical modelling. Since mathematical modelling is a fairly new teaching strategy used in mathematics teaching some teachers may be ignorant of the skills and competencies required for learners to solve problems efficiently. A mixed-methods approach to this study was decided upon and a case study design used within an interpretative paradigm in an effort to ascertain the levels of mathematical modelling competencies of a non-random sample of 20 Grade 10 learners. Participant learners who attended a Western Cape school were requested to solve a set of word problems involving the use of simultaneous equations. Task based activities and observations were used as a means to collect data, as well as semi-structured interviews to gauge participating learners’ views and experiences. Qualitative content analysis methods were employed together with basic descriptive statistical methods.Contribution: Research findings reveal the limited competence and abilities of the participating Grade 10 learners to make sense of, understand or constructively progress in solving contextual problems, and the challenges they experience to progress through particular stages of the modelling process, such as building and solving models and interpreting the solutions thereof.
拥有数学能力是独立理解、理解和在特定环境中应用数学建模的所有特征的先决条件。因此,本研究探讨了十年级学生在数学学习和教学情境中解决情境问题时所表现出的数学建模能力,并特别提到了数学建模的使用。由于数学建模是一种用于数学教学的较新的教学策略,一些教师可能不了解学习者有效解决问题所需的技能和能力。本研究决定采用混合方法,并在解释性范式中使用案例研究设计,以确定20名非随机样本的10年级学生的数学建模能力水平。参加西开普一所学校的学习者被要求解决一组涉及联立方程使用的单词问题。基于任务的活动和观察被用作收集数据的手段,以及半结构化访谈来衡量参与学习者的观点和经验。定性内容分析方法与基本的描述性统计方法相结合。贡献:研究结果揭示了参与的10年级学习者在理解、理解或建设性地解决情境问题方面的有限能力,以及他们在建模过程的特定阶段(如建立和解决模型以及解释其解决方案)所经历的挑战。
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引用次数: 0
Solving quadratic equations by completing the square: Applying Newman’s Error Analysis Model to analyse Grade 11 errors 通过完成平方来解一元二次方程:应用纽曼错误分析模型分析 11 年级错误
IF 1.2 Q3 Mathematics Pub Date : 2023-12-07 DOI: 10.4102/pythagoras.v44i1.742
T. Makgakga
Error analysis is an instructional strategy that can assist teachers to identify learners’ areas of weakness in mathematics and that can point to remediation of those errors. This article explores the errors learners exhibit when solving quadratic equations by completing the square using Newman’s Error Analysis Model. A research study explored the errors learners exhibit when solving quadratic equations by completing the square. Newman’s Error Analysis Model provided the analytic framework for the qualitative approach that was used to explore those errors. A diagnostic test with five test items was administered to 35 learners in one secondary school in Limpopo province of South Africa. Subsequently, 12 learners whose scripts featured common mistakes were identified; these learners participated in a semi-structured interview to diagnose the errors. The findings revealed that learners commit comprehension, transformation and process errors. The findings suggest that if the errors that learners make are exposed and made explicit, the errors can be remediated and thereby enhance understanding and learning. The findings of this study indicate that for teachers to understand the types of errors learners commit when solving quadratic equations by completing the square it is vital for them (errors) to be addressed. Mathematics teachers should also consider diagnosing why learners commit those errors, as they would know the strategies to be employed to teach this topic and subsequent topics.Contribution: The findings of this article add value to the current literature by providing empirical knowledge on learner challenges when solving quadratic equations by completing the square. This study provides opportunities for mathematics teachers to focus more on the strategies that would assist learners to understand this topic.
错误分析是一种教学策略,可以帮助教师识别学生在数学方面的弱点,并指出这些错误的补救措施。本文探讨了学习器在使用纽曼误差分析模型完成平方求解二次方程时所表现出的误差。一项研究探讨了学习者通过完成平方来解二次方程时所表现出的错误。纽曼的误差分析模型为用于探索这些误差的定性方法提供了分析框架。对南非林波波省一所中学的35名学生进行了一项包含五个测试项目的诊断测试。随后,确定了12名学习者,他们的脚本中存在常见错误;这些学习者参加了一个半结构化的访谈来诊断错误。研究结果表明,学习者在理解、转换和处理方面存在错误。研究结果表明,如果学习者犯的错误被暴露和明确,错误可以被纠正,从而提高理解和学习。本研究的结果表明,教师要了解学习者在通过完成平方解二次方程时所犯的错误类型,解决这些错误是至关重要的。数学教师还应该考虑诊断学生犯这些错误的原因,因为他们会知道在教授这个主题和后续主题时应该采用的策略。贡献:这篇文章的发现增加了当前文献的价值,通过完成平方来解决二次方程时,提供了关于学习者挑战的经验知识。这项研究为数学教师提供了机会,让他们更多地关注帮助学习者理解这一主题的策略。
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引用次数: 0
The impact of artificial intelligence and the future of ChatGPT for mathematics teaching and learning in schools and higher education 人工智能的影响以及 ChatGPT 在学校和高等教育数学教学中的前景
IF 1.2 Q3 Mathematics Pub Date : 2023-12-04 DOI: 10.4102/pythagoras.v44i1.787
Rajendran Govender
No abstract available.
没有摘要。
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引用次数: 0
Conversations reflecting boundary-objects-related details of a teacher’s local practices with spreadsheet algebra programs on variables 反映教师在当地使用电子表格变量代数程序时与边界对象有关的细节的对话
IF 1.2 Q3 Mathematics Pub Date : 2023-11-30 DOI: 10.4102/pythagoras.v44i1.756
M. Gierdien, Wajeeh M. Daher, Awni M. Abu-Saman
The ways teachers converse about their work in relation to information and communications technologies (ICTs) are worth studying. We analyse how a teacher converses about her local practices in relation to two spreadsheet algebra programs (SAPs) on variables. During the conversations we noticed that the teacher keeps different policy documents – boundary objects – firmly in view, in relation to the design of the two other boundary objects, namely the two SAPs. The policy documents provide details on the operative curricula which entail the intended, implemented and examined curricula. Of these curricula, the teacher regarded the examined curriculum and associated examinations as most important. Also, she conversed about how she intends to align the design features of the two SAPs with particular policy documents, especially in the context of the South African high-stakes National Senior Certificate examinations and the attendant examination pressure. Our results confirm current professional development (PD) literature suggestions that emphasise fostering coherence, for example between policy boundary objects details and what university-based PD providers do when they interact with school teachers.Contribution: The results provide guidelines for university-based PD providers to integrate SAPs or other ICTs related to algebra and variables by keeping teachers’ local practices in view. These providers should note that different policy-related boundary objects shape the ways teachers understand and converse about their local practices, namely their work at the classroom level.
教师就其工作与信息和通信技术(ICTs)进行交流的方式值得研究。我们分析了一位教师是如何就两个变量电子表格代数程序(SAP)的本地实践进行对话的。在对话过程中,我们注意到,这位教师在设计另外两个边界对象(即两个 SAP)时,牢牢地抓住了不同的政策文件--边界对象。这些政策文件提供了有关可操作课程的详细情况,其中包括预期课程、已实施课程和已检查课程。在这些课程中,教师认为考试课程和相关考试最为重要。此外,她还谈到了自己打算如何使两个 SAP 的设计特点与特定的政策文件保持一致,特别是在南非国家高级证书考试高风险和随之而来的考试压力的背景下。我们的研究结果证实了当前专业发展(PD)文献的建议,即强调促进一致性,例如政策边界对象细节与大学专业发展提供者在与学校教师互动时的行为之间的一致性:研究结果为大学专业发展课程提供者提供了指导,使他们能够结合教师的本地实践,整合与代数和变量相关的 SAP 或其他信息和通信技术。这些机构应注意到,与政策相关的不同边界对象会影响教师对其本地实践(即课堂工作)的理解和交流。
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引用次数: 0
Talk that supports learners’ folding back for growth in understanding geometry 支持学习者折返的谈话,促进对几何知识的理解
IF 1.2 Q3 Mathematics Pub Date : 2023-11-30 DOI: 10.4102/pythagoras.v44i1.711
K. Chuene, Koena Mabotja, S. Maoto
In this article, we argue that folding back is successful when the learners engage in exploratory talk. To support our argument, we sourced data from a Grade 10 mathematics classroom of 54 learners who participated in a four-week teaching experiment conducted by the second author. We mainly focused on talks in two groups of learners to address the silence of literature on folding back that alludes to the kind of talk that learners engage in. Data were captured through video recording of learners’ interactions as they worked on the tasks in different sessions. We present these data as transcribed extracts of talks that the learners held and synthesise them into stories through Polkinghorne’s narrative mode of data analysis, also using a process that Kim referred to as narrative smoothing. Pirie and Kieren’s conception of folding back and Wegerif and Mercer’s three ways of talking and thinking among learners were used as a heuristic device for synthesising the stories. The narratives illustrate that exploratory talk promotes folding back, where learners build on each other’s ideas to develop geometry understanding. Therefore, the significance of this article is that for classrooms that wish to promote growth in understanding through folding back, the type of talk that should be normative is exploratory talk.Contribution: Our search of the literature databases has yet to reveal an empirical study that draws attention to exploratory talk’s role in developing learners’ understanding of geometry in South Africa. However, this study is one of those that allude to the support of exploratory talk on folding back in developing geometry understanding. Our findings imply that mathematics classrooms should consider incorporating exploratory talk as part of teaching and learning geometry. Furthermore, studies on engendering exploratory talk in teaching mathematics are recommended.
在本文中,我们认为当学习者进行探索性谈话时,折返是成功的。为了支持我们的论点,我们从一个由 54 名学习者组成的 10 年级数学课堂中获取数据,这些学习者参加了由第二作者主持的为期四周的教学实验。我们主要关注了两组学习者的谈话,以解决有关折返的文献中没有提及学习者进行何种谈话的问题。我们通过视频记录了学习者在不同环节中完成任务时的互动情况。我们通过波尔金霍恩的叙事模式分析数据,并使用金所说的叙事平滑过程,将这些数据作为学习者谈话的转录摘要呈现出来,并将其综合为故事。Pirie 和 Kieren 的折返概念以及 Wegerif 和 Mercer 的学习者谈话和思考的三种方式被用作综合故事的启发式工具。这些叙述表明,探索性谈话促进了折返,学习者在彼此观点的基础上发展几何理解。因此,本文的意义在于,对于希望通过折返促进理解能力增长的课堂而言,探索性谈话应该是规范的谈话类型:我们在文献数据库中进行了搜索,但尚未发现一项实证研究能够引起人们对探索性谈话在培养南非学习者对几何知识的理解方面所起作用的关注。不过,本研究是暗示探索性谈话对培养几何理解的折返支持的研究之一。我们的研究结果表明,数学课堂应考虑将探索性谈话作为几何教学的一部分。此外,我们还建议在数学教学中对探索性谈话进行研究。
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