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The purpose of this study was to investigate the errors experienced by students learning with REACT strategy and traditional learning in solving problems of mathematical representation ability. This study used quasi experimental pattern with static-group comparison design. The subjects of this study were 47 eighth grade students of junior high school in Bandung consisting of two samples. The instrument used was a test to measure students' mathematical representation ability. The reliability coefficient about the mathematical representation ability was 0.56. The most prominent errors of mathematical representation ability of students learning with REACT strategy and traditional learning, was …
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Using Trends in International Mathematics and Science Study (TIMSS) 2011 eighth-grade international dataset, this study explored the profiles of instructional practices reported by high- and low-performing mathematics teachers across the US, Finland, Korea, and Russia. Concepts of conceptual teaching and procedural teaching were used to frame the design of the current study. Latent cluster analysis was applied in the investigation of the profiles of mathematics teachers’ instructional practices across the four education systems. It was found that all mathematics teachers in the high- and low-performing groups used procedurally as well as conceptually oriented practices in th…
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The rural area's student difficulties in learning the concept of number operation had been documented by several studies, especially for the case of multiplication. The teacher typically introduces the multiplication concepts using the formula without involving the concept itself. Furthermore, this study aims to design learning trajectory on multiplication operations in the Mathematics of GASING (Math GASING) by focusing more on the concept itself than the formula and by starting from the informal to a formal level of teaching. Design research used as the research method to solve this problem consisting of three phases, namely preliminary design, teaching experiment, and retrospective analys…
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The lack of Indonesian students achievement in the international assessment is due to several factors. Students are not familiar with the problems requiring reasoning, in particular the proportional reasoning. This research aims to identify the distribution and the Level of Cognitive Demands (LCD) of the proportional reasoning problems found in the Year 7 and Year 8 mathematics textbooks based on the 2013 curriculum (revised edition 2014). The data collection was conducted by identifying the proportional reasoning problems found in the whole chapters of the textbooks which are then analysed and classified using the Smiths and Stein’s criteria of LCD (1998). The results reveal that the…
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Marriage is an essential part of life for most people. In the Javanese tradition, great attention is paid to the weton of the couple through Javanese Primbon. It predicts the fate of the couple in the marriage. This prediction of the Javanese outcome after the wedding has some numerical values. Therefore, this study aims to uncover these numerical values using ethnomathematics. This research uses a qualitative method. Analyzing the Javanese Primbon documents is meant to explore the numerical value of Javanese people. Also, analyzing the data using the Javanese Primbon documents was not only based on the interpretation of the researcher but also the result of discussions with cultural and mat…
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The purpose of this research was to show open-ended questions about surface area and beam volume which valid and practice, have potential effect. This research is research development which consists of two main phases: preliminary phase (preparation phase and problem design) and formative evaluation phase (evaluation and revision phases). The objective of the study is the students of VIII.2 class of Junior High School 55 Palembang. The result of the study got 9 questions open-ended of surface area and beam volume materials which valid and practical. In addition, there was the potential effect of students' mathematical ability on the open-ended questions that have been given. The result of op…
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This study is a quasi-experimental research with pretest-posttest control group design, which aims to determine (1) the tendency of students in using various media scaffolding based on gender, and (2) effect of media scaffolding on increasing understanding of students’ geometry concepts. Media scaffolding used this study is chart, props, and visual. The population was the fifth grade students of State Elementary School I Gunung Terang (total 40 students), Bandar Lampung, Indonesia of the academic year 2015-2016. The sample was total sampling, respectively 20 students in the experimental class (with media scaffolding) and control class (without media scaffolding). Data were collected t…
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Abstract This study aimed at analyzing and investigating the authenticity of teacherâs made assessment and its contribution to studentsâ English achievement in Elementary schools in Buleleng regency. The authenticity of teachersâ made assessment was seen in terms of teachersâ assessment planning, assessment implementation as perceived by teachers, teachersâ assessment implementation as perceived by students. This study was also intended in order to know the contribution of those aspects to studentsâ English achievement. The research design for this study was Exploratory Mix-Method design, involving 33 English teachers. The data were collected through documentati…
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Abstract  This study aimed at analyzing students` writings in terms of: (1) the types of cohesive devices used; (2) the types of topical progressions; and (3) the problems of coherence. The subjects investigated were 30 second grade students of SMAN 1 Labuapi. There were two kinds of data collected: written and verbal data. In collecting the data, the students were given a writing task and the students and the English teacher were interviewed. The data were analyzed qualitatively based on Halliday and Hasans` theory of cohesion (1976) and Topical Progression Analysis of Lautamatti (1978) in Hoenisch (2009) and Almaden (2006). The results of study were (1) the students used the five types…
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Abstract This study aims at investigating the effect of information gap technique and achievement motivation toward the speaking ability of the tenth grade students of MAN Selong. Designed as an experimental study, it examined a sample of two classes of grade ten students of MAN Selong. Cluster random sampling technique was used to take the sample. The data were collected through a speaking test and questionnaire of achievement motivation and analyzed by using two way ANOVA analysis and Tuckey test. Then, the findings can be stated as follows: (1) information gap technique is more effective than conventional technique in teaching speaking; (2) there is interaction effect of teaching techni…
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Abstract This study focused on the effect of task based language teaching and grammar mastery toward studentsâ reading comprehension. It was an experimental study by making use of post test-only control group with 2 x 2 factorial design. The population of the study was 175 second semester students of the English Education Study Program of FKIP UNMAS Denpasar wherein 52 students were chosen as the sample through Intact Group Random Sampling. The research data were collected through a grammar mastery test and a reading comprehension test and were analyzed by using Two-Way ANOVA and Tukey test assissted by SPSS 16.0. The findings showed that, firstly, the students who were treated by TBLT …
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Abstract The present study aims at analyzing the authenticity of teacher made assessment in State Senior High Schools in Buleleng Regency in terms of assessment planning, assessment implementation as perceived by teachers and students and the studentsâ English achievement. It also investigates assessment contribution to studentsâ English achievement. The mixed method design research took 32 English teachers and 32 classes of students as the sample. The data were gained by collecting assessment documents, administering questionnaires and interview. The study found that the assessment have high authenticity level of planning, high authenticity level of implementation as perceived by …
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Abstract This study was a research and development (R&D) which aimed at finding out the literacy coverage of English teaching; investigating what materials need to be developed to help students progress with their literacy skills in English; investigating the quality of the developed material; and finding the effect of material developed upon studentsâ English literacy skills. The instruments used to collect the data in this study were checklist, scoring rubric, observation sheet, questionnaire and test. The material develop in this study was based on criteria of good material proposed by Tomlinson. The result of the study shown that the limited time in studying English at school re…
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Abstract The aim of this study was to investigate the effect of think pair share teaching strategy to studentsâ self-confidence and studentsâ speaking competency. This study was conducted towards students of the second grade in SMPN 6 Singaraja, in the academic year 2012/2013. There were 121 students selected as sample put in experimental and control group. The study used a post-test only control group design. The analysis was made by using Manova facilitated by SPSS version 16.0 for windows. The result indicated that (1) there was a significance effect of Think Pair Share on studentsâ self-confidence (F = 754.104 and sig = 0.000; p < 0.05). (2) there was a significance eff…
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 Abstract This study aimed at comparing the effect of different teaching techniques (Journal Writing and Writing Workshop Techniques) based on text types (recount and narrative texts) on studentsâ writing competency. Post-test Only Comparison Group Design was applied as the research design. After the treatment sessions, post-test was administered to discover the impact of the treatments. The data obtained from the post-test were analyzed by using descriptive and inferential statistical analyses. Through descriptive analysis, it was found that the mean scores of the group who was taught both narrative and recount text by using Journal Writing Technique was higher than the group who w…
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 Abstract This research aimed at investigating whether or not there is a different effect between PQRST and SQ3R strategies based on the text types upon the eighth grade studentsâ reading competency. This research was an experimental research with 2 X 2 factorial designs. The population was 6 classes (179 students) of grade VIII in SMPN 4 Singaraja in the academic year 2012/2013, in which 4 classes were sample of this research which was assigned into two groups, two classes with 60 students were PQRST strategy group, and two classes with 60 students were SQ3R strategy group determined by using a Multistage Random Sampling. The data were collected through reading comprehension test t…
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ABSTRACT This experimental study aims at investigating the effect of Project Based Learning (PBL) and studentsâ perceived learning discipline on studentsâ writing competency of the eleventh grade students of SMAN 5 Mataram. PBL is a teaching method which underlies on project given to the students. Besides teaching method, learning discipline is taken into account because it is predicted can affect the studentsâ achievement in learning foreign language. This research involved three type variables, namely: teaching method as independent variable, learning discipline as moderator variable, and studentsâ writing competency as dependent variable. To conduct this research, 8…
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This study aims to know the quality of: (1) planning, (2) organizing, (3) actuating, and (4) controlling of mechanical engineering workshop management at SMK in Purworejo Regency. This study is a quantitative study with survey method. The respondents of this study were the practical lesson teachers of mechanical engineering SMK in Purworejo Regency. The data collection techniques were questionnaire, interview, and observation. The data analysis technique used was descriptive statistics. The results showed that: (1) the planning has a good quality with a mean of 2.961; (2) the organizing has a good quality with a mean of 2.947; (3) the actuating has a good quality with a mean of 3.207; and (4…
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This study aims to identify the effect of the teacher professionalism and the students' learning motivation on the learning effectiveness of the students in Vocational High School (SMK) Negeri 2 Wonosari. The study used a survey method with ex post facto approach. The population consists of 420 students of SMK 2 Wonosari from the Program of Civil Engineering, Electronic Engineering, Electrical Engineering, Mechanical Engineering, and Automotive Engineering. The sample was selected using random sampling technique. The data is analyzed using Multiple Linear Regression analysis. The results point out that most students’ perceptions on the level of teacher professionalism on productive su…
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Penelitian ini bertujuan untuk menguji penggunaan asbuton sebagai filler dalam campuran SMA beserta pengaruhnya terhadap karakteristik marshal yang meliputi: VITM, VFWA, Stabilitas, flow dan MQ. Penelitian ini menggunakan metode eksperimen dengan menguji penggunaan asbuton sebagai filler dalam campuran SMA. Variasi kadar asbuton sebagai filler dibuat 4%, 4,5%, 5%, 5,5% dan 6%. Setiap varian dalam penelitian ini menggunakan 3 benda uji sehingga jumlah sampel adalah 15 buah. Uji menggunakan Aspal yang digunakan Aspalt AC 80/100. Filler yang digunakan Asbuton mikro B30. Kadar aspal yang digunakan ditetapkan sebesar 7%. Analisis data dilakukan dengan menggunakan statistik deskriptif Peneliti…