scholarly journals Difficulty of understanding and using the number line by Elementary school students

2017 ◽  
Vol 31 (1) ◽  
pp. 85-101
Author(s):  
Yang Gwon Kim ◽  
Jin-Kon Hong
2020 ◽  
Vol 11 (1) ◽  
pp. 1-16
Author(s):  
Puspita Sari ◽  
Mimi Nur Hajizah ◽  
Swida Purwanto

The number line and the neutralization model have been used very extensively in teaching integer additions and subtractions for decades. Despite their advantages, issues concerning subtractions on these models are still debatable. Therefore, the neutralization on an empty number line (NNL) model is proposed in this research to help students better understand the meaning of integer subtractions as well as additions. This report is a part of a design research study conducted in a classroom of 28 elementary school students at the fifth grade. Data were gathered by collecting students’ written work, conducting interviews and observations during the teaching experiment. This paper focuses on students’ perceptions of the NNL model and what factors that might contribute to students’ achievements in understanding integer additions and subtractions. The analysis revealed that most students overemphasized on the use of the NNL model as a procedural method instead of as a model for thinking. Moreover, students’ mathematical beliefs and conceptions on the use of the column strategy and the absence of a discussion on the need of using the model are found to be some factors that could cause students’ misunderstandings. However, with a thorough planning, the NNL model has a potential to help students developing a meaning of integer additions and subtractions.


2021 ◽  
Vol 5 (4) ◽  
pp. 1085
Author(s):  
Farida Zakiah ◽  
Sukirman Sukirman ◽  
Sri Utaminingsih

The purpose of this research was to analyze the effectiveness of gabilpanet-based number line learning media to enhance elementary school students’ understanding of the concept of integer counting operations at grade IV in Kabupaten Jepara. This research was a development research using Borg & Gall model. The development steps included: 1) researching the existing products, 2) studying the literature, 3) planning the product development, 4) designing the product, 5) conducting limited trial, 6) conducting main field trial, 7) conducting operational field trial. The subjects of this study were sixth grade students at SDN 4 Tulakan, SDN 2 Bandungharjo, SDN 3 Bandungharjo, and SDN 4 Bandungharjo. Data were collected through observation, questionnaires, tests, and interviews. Then, the validation results were analyzed by accumulating the scores and the statistical test of the effectiveness was carried out with SPSS version 26. Data on the effectiveness of gabilpanet-based number line learning media were analyzed through normality and homogeneity tests at a significance level of 0.05. The finding revealed that gabilpanet-based number line learning media was effective and useful to be utilized in learning activities in order to enhance studetns’ understanding of the concept of integer counting operations. Based on the data obtained, the average score of students’ learning activities was 0.76 with a percentage of 76%. Moreover, the result of students’ learning outcome based on the average score of n-Gain was 0.69 with an average pre-test score of 43.00 and the average post test 82.50. 


EDUKASI ◽  
2016 ◽  
Vol 14 (2) ◽  
Author(s):  
Hery Suharna ◽  
Agung Lukito Nusantara ◽  
I Ketut Budayasa

The research reveals a profile of reflective thinking of elementary school students in problem solving fractions based on his mathematical abilities. The instruments used in data collection is Test Problem Solving (TPM), interview. Selection of research subjects in a way given test is based on the ability of mathematics, namely mathematical skills of high, medium and low and further categorized and taken at least 2 people to serve as subjects. The research objective is: describe the profile of reflective thinking that math skills of elementary school students High, medium, and low. Based on the results of the study found reflective thinking profile and high ability students were as follows: (a) the step to understand the problems students have information/knowledge or data that is used to respond, comes from inside (internal) and can explain what has been done; (B) the planned step problem solving students have information/knowledge or data that is used to respond, comes from inside (internal) and can explain what has been done; (C) on measures to implement the plan in terms of information/knowledge or data used by students to respond, comes from inside (internal), could explain what has been done, realized the error and fix it, and communicate ideas with a symbol or image, and (d) the checking step back, namely information/knowledge or data that is used by students to respond, comes from inside (internal) and can explain what has been done. Profile of reflective thinking ability students lowly mathematics, namely: (a) at the stage of understanding the problem, students can determine known and asked in the problem, but the students' difficulties to explain the identification of the facts that have been done, the students explained the understanding vocabulary, and feel of existing data the matter is enough; (B) at the stage of implementing the plan, the students explained, organize and represent data on the issue, describes how to select the operation in solving a problem though students are not sure, and students' difficulty in explaining what he had done; (C) at the stage of implementing the plan, the student has information on calculation skills although the answer is not correct. Students difficulty in explaining about the skills calculations have been done, trying to communicate their ideas in the form of symbols or images, even if students rather difficult to describe, and realized there was an error when using a calculation skills and improve it; (D) at the stage of check, students' difficulties in explaining whether obtained estimates it approached, it makes senseKeywords: reflective thinking, problem solving, fractions, and math skills.


2020 ◽  
Vol 4 (6) ◽  
Author(s):  
Zaenal Arifin

This study aims to: (1) develop thematic textbooks based on local wisdom of our best friend's environmental theme material for grade V elementary school students, (2) Know the validity, practicality and effectiveness of thematic textbooks based on local wisdom of our best friend's environmental theme material for grade students V elementary school. The development of thematic textbook learning media based on local wisdom uses the Research and Development (R & D) method. The development stages include: (1) Potentials and problems, (2) Data collection, (3) Product design, (4) Design validation, (5) Design revision, (6) Product testing, (7) Product revision (Sugiyono, 2016). The research was conducted with 33 students from class V SDN 2 Sendang Jepara Regency. Initial product development is a process of making media based on needs analysis. Expert testing or validation was carried out by 2 experts, namely media experts and material experts. The data collection method in this research is observation, interview, and questionnaire. The data analysis technique used descriptive analysis and comparison test of two independent groups, namely using the independent t-test. Based on the results of the trial, this thematic teaching material is very valid, very interesting, effective and can be applied in learning. This can be seen from the results of the validation test from three experts which show that the product is good. The results of the effectiveness test showed that the experimental class students had better learning outcomes than the control class. This means that textbooks based on local wisdom of Jepara Regency are developed effectively


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