Spinning the Cube with Technologies

2019 ◽  
Vol 112 (7) ◽  
pp. 551-554
Author(s):  
Lingguo Bu

The rise of dynamic modeling and 3-D design technologies provides appealing opportunities for mathematics teachers to reconsider a host of pedagogical issues in mathematics education, ranging from motivation to application and from visualization to physical manipulation. This article reports on a classroom teaching experiment about cube spinning, integrating traditional tools, GeoGebra (www.geogebra.org), and 3-D design and printing technologies. It highlights the rich interplay between worthwhile mathematical tasks and the strategic use of diverse technologies in sustaining sense making and problem solving with a group of prospective teachers.

2020 ◽  
Vol 39 (2) ◽  
pp. 346-358
Author(s):  
Fitriati Fitriati ◽  
Rita Novita ◽  
Rahmah Johar

Promoting reflective thinking in daily teaching practice is vital to prepare students to live in a more challenging world. Rich tasks are one of the promising tasks that could be used as pedagogy trend to develop students' reflective thinking. Therefore, the purpose of this study is to describe the usefulness of rich mathematical tasks including how teachers use them in their teaching practice and the improvement of students’ reflective thinking following the rich tasks based instruction. This study employed a teaching experiment within a case study design. Participants were 28 Year 7 students of one the junior high school in Aceh, Indonesia. The instrument of the study is three valid and reliable rich mathematical tasks administered to the students through student worksheet. The results of the study show that rich tasks provided students with the opportunity to solve real-world problems by questioning their understanding and thinking reflectively. It also found that most students in the classroom were able to achieve the low level of reflective thinking with classroom mean score is 60. This value fairly enough since reflective thinking is a complicated concept. Subsequently, the results indicate the rich mathematical tasks approach hold potential in enhancing students’ reflective thinking ability.


Symmetry ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 1627
Author(s):  
Wajeeh Daher ◽  
Nimer Baya’a ◽  
Otman Jaber ◽  
Juhaina Awawdeh Shahbari

It is the intention of the current study to suggest a trajectory for the advancement of prospective mathematics teachers’ use of meta-cognitive skills in solving mathematics-based programming problems with Scratch. Scratch is a code-based program that can be utilized in teaching various disciplines, especially geometry and its rich range of subjects such as the topic of symmetry. The present study suggests that advancing prospective teachers’ meta-cognitive skills in the Scratch environment could be done through problem solving and negotiations. The present paper analyzed the implementation of the trajectory by two pedagogic supervisors who attempted, in the frame of one-year preparation (2018–2019), to educate 18 prospective teachers to use meta-cognitive skills in mathematics-based programming activities, where this attempt was based on problem solving and negotiation processes. Data were collected through videoing and recording the learning sessions of the prospective teachers and was analyzed using deductive and inductive constant comparison methods. The deductive analysis utilized theoretical models of meta-cognitive processes and negotiation processes. The research results indicated that the negotiation processes supported the development of the prospective teachers’ meta-cognitive processes in solving mathematics-based programming problems with Scratch.


Numeracy ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 20-34
Author(s):  
Fitriati Fitriati ◽  
Marlaini Marlaini

Problem solving skills are essential skill for students to live in a challenging world. Teachers are required to carry out the mathematics instruction that could train these skills. One of the learning models that can be used is problem based learning (PBL) with rich mathematical tasks. Therefore, the purpose of this study is to apply the PBL-based Rich Tasks model to develop students' problem solving skills. This study used one-shot case study experimental design involving 21 grade 9 students from one of the junior high schools in Banda Aceh. The results showed that PBL with Rich Mathematical Tasks was able to develop students' problem solving skills with an average achievement before treatment (pre-test) equal to 2.92 which then improve after treatments given with the score equal to  70.82. In addition, the score of each of the end lesson tests also risen   with  62.14 for PB1 and  67.75 for PB2. This improvement was gained because the PBL with rich tasks approach has the potentials to facilitate student learning mathematics. Teachers are advised to use the PBL with rich tasks approach continuously in the daily mathematics instruction, so that students’ problem solving skills can be  improved in the future. Abstrak Keterampilan pemecahan masalah merupakan skil penting yang harus dimiliki peserta didik agar dapat hidup bertahan dalam dunia yang penuh dengan tantangan. Untuk itu guru dituntut agar mampu melaksanakan proses pembelajaran matematika yang dapat melatih keterampilan tersebut. Salah satu model pembelajaran yang dapat digunakan adalah model belajar PBL berbasis Rich Tasks Matematika. Oleh karena itu tujuan penelitian ini adalah untuk menerapkan model PBL berbasis Rich Tasks untuk menumbuhkembangkan keterampilan pemecahan masalah siswa. Penelitian ini menggunakan desain eksperimen one-shot case study yang melibatkan 21 siswa kelas IX dari salah satu sekolah menengah pertama di Banda Aceh. Hasil penelitian menunjukkan bahwa PBL berbasis Rich Tasks mampu mengembangkan keterampilan pemecahan masalah siswa, dengan rata-rata nilai tes awal sebesar 2.92  yang meningkat pada tes akhir dengan nilai rata-rata sebesar 70.82. Begitu juga dengan nilai tes matematika di akhir setiap pertemuan  terus meningkat yaitu 62,14 (P1) dan 67.75 (PB2). Hal ini disebabkan karena model PBL berbasis rich tasks sangat potensial dalam memfasilitasi siswa belajar. Guru disarankan untuk terus dapat menggunakan rich tasks secara kontinue dalam proses pembelajaran matematika sehari-hari, sehingga keterampilan pemecahan masalah siswa dapat ditingkatkan dimasa yang akan datang.   Kata Kunci: Rich Tasks, PBL, Keterampilan Pemecahan Masalah, Pembelajaran Matematika


Author(s):  
Leonardo Barichello ◽  
Rita Santos Guimarães

Tomando como ponto de partida o fato de que atividades matemáticas são descritas em livros didáticos, documentos oficiais e artigos acadêmicos por uma gama variada de adjetivos e que não há consenso acerca do significado destes, este artigo tem o objetivo de analisar como professores de matemática descrevem atividades para a sala de aula. Trata-se da replicação de uma pesquisa conduzida com professores de matemática britânicos. Nossos dados foram coletados via questionário eletrônico, no qual professores avaliaram o quão bem 88 adjetivos e expressões descreviam uma atividade matemática escolhida por eles. Esses dados foram analisados por meio de uma análise fatorial exploratória que identificou sete fatores independentes subjacentes aos dados. São eles: Efetividade, Rotina, Exigência, Abstração, Contextualização, Inovação e Interação. Além de uma discussão sobre cada um dos fatores, também são discutidas as semelhanças e diferenças em relação aos resultados obtidos na pesquisa britânica. Espera-se que este resultado ajude a informar o diálogo entre as várias partes envolvidas no ensino de matemática. Além disso, também se discute a relação identificada entre a expressão “resolução de problemas” e o fator Contextualização. Contrariando o que é sugerido em documentos oficiais, nossa análise indica que os professores de matemática no Brasil associam “resolução de problemas” com questões relacionadas a contextos reais e aplicados em detrimento de contextos matemáticos abstratos. Independentemente do motivo por trás dessa associação, este resultado aponta para a necessidade de melhora da comunicação entre políticas públicas e professores de matemática.Palavras-chave: Atividades Matemáticas. Adjetivos. Análise Fatorial. Resolução de Problemas. Contextualização.AbstractConsidering that mathematical tasks are described in textbooks, official documents and academic articles using a huge variety of adjectives and that there is no consensus around their meanings, this paper analyses how mathematics teachers describe such tasks. In order to do so, we replicated a study conducted with British mathematics teachers. The data was collected through online questionnaires in which teachers graded in a Likert scale how well 88 adjectives and expressions were fit as a description of a mathematical task chosen by them. The data were analysed using exploratory factor analysis and we identified seven independent factors, namely: Efetividade, Rotina, Exigência, Abstração, Contextualização, Inovação and Interação. Besides a discussion of each factor, we also discuss the similarities and differences between ours and the British results. It is expected that this result can inform the dialogue in the field of mathematics teaching and learning. Furthermore, we discuss in this paper a relationship between the expression problem-solving and the factor Contextualization. Differently to what is suggested in official documents, our analysis indicate that Brazilian mathematics teachers are associating problem solving with contextualized, applied, real life questions to a larger extent than with abstract, mathematical contexts. Aside the reasons behind this association, this result points to the need of improving the communication between policy makers and mathematics teachers.Keywords: Mathematical Tasks. Adjectives. Factor Analysis. Problem-Solving. Context-Based.


ZDM ◽  
2021 ◽  
Author(s):  
Gemma Carotenuto ◽  
Pietro Di Martino ◽  
Marta Lemmi

AbstractResearch on mathematical problem solving has a long tradition: retracing its fascinating story sheds light on its intricacies and, therefore, on its needs. When we analyze this impressive literature, a critical issue emerges clearly, namely, the presence of words and expressions having many and sometimes opposite meanings. Significant examples are the terms ‘realistic’ and ‘modeling’ associated with word problems in school. Understanding how these terms are used is important in research, because this issue relates to the design of several studies and to the interpretation of a large number of phenomena, such as the well-known phenomenon of students’ suspension of sense making when they solve mathematical problems. In order to deepen our understanding of this phenomenon, we describe a large empirical and qualitative study focused on the effects of variations in the presentation (text, picture, format) of word problems on students’ approaches to these problems. The results of our study show that the phenomenon of suspension of sense making is more precisely a phenomenon of activation of alternative kinds of sense making: the different kinds of active sense making appear to be strongly affected by the presentation of the word problem.


2013 ◽  
Vol 8 (1) ◽  
pp. 6-40 ◽  
Author(s):  
Kati Vapalahti ◽  
Miika Marttunen ◽  
Leena Laurinen

This paper reports on a teaching experiment in which social work students (n=38) practiced problem solving through argumentative tasks. A teaching experiment was carried out at a Mikkeli University of Applied Sciences in Finland in connection with a course concerning preventative work against alcohol- and drug abuse. This quasi- experimental study investigated whether role-play simulation conducted either online (15 students) or face-to-face (14 students) improved students’ problem solving on social issues. As a pre-test, the students wrote an essay after having watched a dramatization of problematic cases on elderly people’s use of alcohol. The students also attended lectures (30 x 45 min) on the effect of substance abuse and preventive work, and after the role-play simulation they wrote another essay (post-test). Nine controls wrote an essay without participating in the role-play simulation. Lastly, the students filled out feedback questionnaires.


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2018 ◽  
Vol 7 (2) ◽  

2020 ◽  
Vol 9 (3) ◽  
pp. 243
Author(s):  
MEHMET FATIH ÖÇAL ◽  
TUĞRUL KAR ◽  
GÜRSEL GÜLER ◽  
ALI SABRI İPEK

This study aims to investigate the similarities and differences between prospective mathematics teachers’ creative thinking skills in paper-pencil test and on a Geogebra-supported environment in terms of problem-posing. This case study used purposive sampling method for determining the participants. Findings revealed that the activities carried out in the GeoGebra-supported environment were insufficient to produce creative problems, and GeoGebra’s main utility to prospective teachers was in identifying their mistakes related to mathematical concepts and discrepancies among numerical values of the problems posed. The reasons for the low achievement in posing problem were discussed: These were; (i) lack of problem-posing experience, (ii) the structure of problem-posing activity, and (iii) prospective teachers’ mathematical content knowledge.


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