scholarly journals PELATIHAN PEMBUATAN ALAT PERAGA MATEMATIKA UNTUK SEKOLAH DASAR MEMANFAATKAN BAHAN BEKAS DI SD NEGERI 01 PADANG AIR DINGIN

Author(s):  
Mirda Swetherly Nurva ◽  
Tiara Fikriani

The object of mathematics is abstract, so that the math teacher must compose abstract mathematical objects to be easy learning for students. Solving this problem, experience through real objects (concrete) such as props is required. Using props, students can see, feel, and think directly about the object after they learn so that the abstract concept being studied can settle, cling, and last in the student's mind. This devotion aims to provide the ability to think mathematics creatively and develop a favourable attitude towards mathematical thinking. The methods of this devotional activity are lectures, Q&A and discussions. The results obtained after doing this activity have an impact on students' understanding. Students who understand the materials taught faster and then teachers are also more creative in utilizing used materials to learn media. Teachers do not have to spend much money to make an attractive prop

Author(s):  
William Enrique Poveda Fernández

RESUMENEn este artículo se analizan y discuten las ventajas y oportunidades que ofrece GeoGebra durante el proceso de resolución de problemas. En particular, se analizan y documentan las formas de razonamiento matemático exhibidas por ocho profesores de enseñanza secundaria de Costa Rica, relacionadas con la adquisición y el desarrollo de estrategias de resolución de problemas asociadas con el uso de GeoGebra. Para ello, se elaboró una propuesta de trabajo que comprende la construcción y la exploración de una representación del problema, y la formulación y la validación de conjeturas. Los resultados muestran que los profesores hicieron varias representaciones del problema, examinaron las propiedades y los atributos de los objetos matemáticos involucrados, realizaron conjeturas sobre las relaciones entre tales objetos, buscaron diferentes formas de comprobarlas basados en argumentos visuales y empíricos que proporciona GeoGebra. En general, los profesores usaron estrategias de medición de atributos de los objetos matemáticos y de examinación del rastro que deja un punto mientras se arrastra.Palabras claves: GeoGebra; Resolución de problemas; pensamiento matemático. RESUMOEste artigo analisa e discute as vantagens e oportunidades oferecidas pelo GeoGebra durante o processo de resolução de problemas. Em particular, as formas de raciocínio matemático exibidas por oito professores do ensino médio da Costa Rica, relacionadas à aquisição e desenvolvimento de estratégias de resolução de problemas associadas ao uso do GeoGebra, são analisadas e documentadas. Para isso, foi elaborada uma proposta de trabalho que inclui a construção e exploração de uma representação do problema, e a formulação e validação de conjecturas. Os resultados mostram que os professores fizeram várias representações do problema, examinaram as propriedades e atributos dos objetos matemáticos envolvidos, fizeram conjecturas sobre as relações entre esses objetos e procuraram diferentes formas de os verificar com base em argumentos visuais e empíricos fornecidos pelo GeoGebra. Em geral, os professores utilizaram estratégias para medir os atributos dos objetos matemáticos e para examinar o rasto que um ponto deixa enquanto é arrastado.Palavras-chave: GeoGebra; Resolução de problemas; pensamento matemático. ABSTRACTThis article analyzes and discusses the advantages and opportunities offered by GeoGebra during the problem-solving process. In particular, the mathematical reasoning forms exhibited by eight secondary school teachers in Costa Rica, related to the acquisition and development of problem solving strategies associated with the use of GeoGebra, are analyzed and documented. The proposal was developed that includes the elements: construction and exploration of a representation of the problem and formulation and validation of conjectures. The results show that teachers made several representations of the problem, examined the properties and attributes of the mathematical objects involved, made conjectures about the relationships between such objects, and sought different ways to check them based on visual and empirical arguments provided by GeoGebra. In general, the teachers used strategies to measure the attributes of the mathematical objects and to examine the trail that a point leaves while it is being dragged.Keywords: GeoGebra; Problem Solving; Mathematical Thinking.


2012 ◽  
Vol 49 (1) ◽  
pp. 95-103
Author(s):  
Sergey Sergeev ◽  
Maria Urban

The appearance of up-to-date computer technologies extended the application of visualization in mathematics itself as well as in mathematics education drastically. In a number of recent studies the problem of design of technological tools, capable of fostering the students’ mathematical thinking has been discussed hotly. Taking into consideration the primary importance of dynamic visualization (DV) in educational multimedia it is necessary to state that the creation of didactically efficient DV becomes an independent and the urgent educational task. Methodically grounded realization of dynamic connection between representations of mathematical objects, design of auxiliary visual elements and effects, as well as highlighting of significant objects and relations are prerequisites of potential DV efficacy. While interacting with DV a student can realize how a certain mathematical construction is “built”, detect essential connections between its elements, and in the long term comprehend the underlying mathematical ideas and concepts. The key advantage of DV in comparison with static vizualization is in the fact that DV gives the opportunity to have a good look at a genesis of a new mathematical object in its dynamics, and to explore the connections between graphical representations without necessity to perform labor-consuming calculations, which gives the possibility to concentrate students’ attention on conceptual aspects of a studied mathematical objects. In teaching DV can be used both as an additional tutorial visualizing some elements of knowledge and as a dominant one influencing significantly all the other components of a methodological system. The latter can include for example software “analogue” of the physically existing artefact – positional abacus. In any case the teacher acquires the opportunity to create new in their essence, often nontrivial didactical tasks with DV employment. Key words: computer technologies, mathematics education, visualization.


Author(s):  
Sarah Schäfer ◽  
Dirk Wentura ◽  
Christian Frings

Abstract. Recently, Sui, He, and Humphreys (2012) introduced a new paradigm to measure perceptual self-prioritization processes. It seems that arbitrarily tagging shapes to self-relevant words (I, my, me, and so on) leads to speeded verification times when matching self-relevant word shape pairings (e.g., me – triangle) as compared to non-self-relevant word shape pairings (e.g., stranger – circle). In order to analyze the level at which self-prioritization takes place we analyzed whether the self-prioritization effect is due to a tagging of the self-relevant label and the particular associated shape or due to a tagging of the self with an abstract concept. In two experiments participants showed standard self-prioritization effects with varying stimulus features or different exemplars of a particular stimulus-category suggesting that self-prioritization also works at a conceptual level.


1996 ◽  
Vol 41 (1) ◽  
pp. 80-80
Author(s):  
Daniel Stalder ◽  
Shubhangi Stalder

PsycCRITIQUES ◽  
2010 ◽  
Vol 55 (23) ◽  
Author(s):  
Gordon Pitz

2014 ◽  
Author(s):  
John Magnotti ◽  
Jeffrey Katz ◽  
Anthony Wright ◽  
Debbie Kelly

2010 ◽  
Author(s):  
Lucia Lazarowski ◽  
Rachel Eure ◽  
Mallory Gleason ◽  
Adam Goodman ◽  
Aly Mack ◽  
...  

2011 ◽  
Author(s):  
Marisa Hoeschele ◽  
Robert G. Cook ◽  
Lauren M. Guillette ◽  
Allison H. Hahn ◽  
Christopher B. Sturdy

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