http://e-journal.stkipsiliwangi.ac.id/index.php/infinity/issue/feedInfinity Journal2017-07-25T09:33:54+00:00Wahyu Hidayatjurnal_infinity@stkipsiliwangi.ac.idOpen Journal Systems<p>Infinity Journal published by STKIP Siliwangi Bandung publishes original research or theoretical papers about teaching and learning in mathematics education study program on current science issues, namely:</p><ol><li>Mathematics educator in elementary, secondary and high school level</li><li>Mathematics observers and researchers</li><li>Educational decisions maker on regional and national level</li></ol><p> </p><p>We recommend classroom action research, qualitative, descriptive, or quantitative. We may process manuscript of didactic development research (DDR) or research and development (RnD).</p><p> </p><p>Our publication could be research on teaching method, experiment of teaching aid or media, and even effectiveness of lesson study. We accepted any manuscript derived from research of mathematics education. We will not process manuscript from research approach of school management.</p>http://e-journal.stkipsiliwangi.ac.id/index.php/infinity/article/view/303LANGUAGE LITERACY AND MATHEMATICS COMPETENCE EFFECT TOWARD WORD PROBLEMS SOLVING2017-07-25T09:33:54+00:00Namirah Fatmanissanamirahf@student.upi.eduRahmat Sagaranamirahf@student.upi.edu<span>This study aims to know the effect of language literacy and basic Mathematics competence toward students’ ability to solve word problems. The research was done by giving three sets of questions; language literacy (LL) set, basic Mathematics competence (BM) set, and word problems (WP) set; to the research sample. Research sample was 315 tenth grade students from five schools in Jakarta. Score of students in each set was analyzed as research data. Score of LL set was treated as data of independent variable 1, score of BM set was treated as data of independent variable 2, and score of WP set as data of dependent variable. Preliminary data analyses, such as normality, validity, and reliability test, were done. Then, data was analyzed using Wilcoxon test and calculation of R-square. The result shows that each of independent variable affects dependent variable with BM variable has more effect on WP variable.</span>2017-07-11T21:15:50+00:00Copyright (c) 2017 Infinity Journalhttp://e-journal.stkipsiliwangi.ac.id/index.php/infinity/article/view/360ANALYSIS OF MATHEMATIC REPRESENTATION ABILITY OF JUNIOR HIGH SCHOOL STUDENTS IN THE IMPLEMENTATION OF GUIDED INQUIRY LEARNING2017-07-11T21:16:16+00:00Yumiati Yumiatiyumi@ecampus.ut.ac.idMery Noviyantimerrynov@gmail.comThe objective of this research is to analysing the different on upgrade the student’s math representation that obtained the guided inquiry learning and conventional learning. This research conducted by applying experiment method with <em>nonequivalent</em> <em>control group design</em> at one school. Which becoming research subject are students of Dharma Karya UT Middle School at 8<sup>th</sup> Grade. 8-2 class selected as control class (19 students) and 8-3 class selected as experiment class (20 students). Before and after learning process, two classes given the test of math representation with reliability is 0.70 (high category). The magnitude of the increasing in students’ math representation student group of guided inquiry learning group is 0.41 included as medium category. Meanwhile, the increasing students’ math representation student group of conventional learning is 0.26 included as low category. In conclusion, the hypothesis of the ability of the mathematical representation of students who learning with guided inquiry is better than students with conventional learning is accepted.2017-07-11T21:15:44+00:00Copyright (c) 2017 Infinity Journalhttp://e-journal.stkipsiliwangi.ac.id/index.php/infinity/article/view/302ANALYSIS OF STUDENTS’ MATHEMATICAL COMMUNICATION ABILITY BY USING COOPERATIVE LEARNING TALKING STICK TYPE2017-07-25T09:33:32+00:00Dwi Maulida Saridwimaulida20@student.upi.eduThis research aims to describe the students’ mathematical communication ability by using cooperative learning talking stick type. This research conducted at one of junior high school in Asahan-North Sumatera- North Sumatera. This research used posttest experimental class design as the method to obtain data. The indicators used to measure mathematical communication ability in this research arranged in three, as follows: 1) the ability of explaining a mathematical problem into figure; 2) the ability to explain mathematical problem situations by own words; 3) the ability of stating a mathematical problem in writing into mathematical models and doing calculation to solve the problem. The result found from this research is there are the differences in the students’ way of answering the problem even though the learning model and the instrument used is same.2017-07-11T21:14:54+00:00Copyright (c) 2017 Infinity Journalhttp://e-journal.stkipsiliwangi.ac.id/index.php/infinity/article/view/229EXPERIMENTATION OF SPICES LEARNING STRATEGIES WITH THE METHOD OF PROBLEM BASED LEARNING (PBL) TO BUILD MOTIVATION AND THE ABILITY TO THINK LOGICALLY FOR VOCATIONAL SCHOOL STUDENTS2017-07-12T04:47:16+00:00Anggita Maharanianggi3007@yahoo.co.idLaelasari Laelasarilala.mathunswagati@gmail.com<p><strong>Abstract</strong><strong>.</strong> This study aims to expose the interactions that occur in the process of math learning, describe a method of learning motivation of students in classes, describe the ability of math logical thinking of students in classes, and examine the obstacles that happen in the implementation of learning mathematics through a strategy of SPICES with PBL methods. The method used in this research was a quasi-experimental design group post-test. In its implementation, this study uses a class experiment. Qualitative data are obtained in the form of motivational learning scale, whereas the quantitative data in the form of logical thinking ability score using normalized gain. The results showed the existence of a positive interaction during learning. However, learning motivation of students didn’t show a significant improvement. While the logical thinking ability of students after learning of mathematics using the strategy of SPICES with PBL method is in the category is fair. In its implementation, the strategy of SPICES needed support some teachers from several fields of science. It is necessary so the given problem on students can be authentic and integrate to the accordance with the characteristics of SPICES and PBL.</p><p class="AuthorEmail"> </p>Keywords: SPICES, PBL, Vocational High School, Motivation, Logical Thinking2017-07-11T20:43:45+00:00Copyright (c) 2017 Infinity Journalhttp://e-journal.stkipsiliwangi.ac.id/index.php/infinity/article/view/246EFFECT OF LEARNING WITH ABDUCTIVE-DEDUCTIVE STRATEGY TOWARDS THE ACHIEVEMENT OF REASONING ABILITY OF HIGH SCHOOL STUDENTS2017-07-25T09:30:22+00:00Ali Shodikinaliandr4@gmail.comThe purpose of this study was to investigate the effect of learning with abductive-deductive strategy towards the achievement of mathematical reasoning abilities of high school students. Research carried out an experimental pretest-posttest design and the control group was not randomized in class XI student at one high school in Pati, Central Java, Indonesia. Data analysis was conducted quantitative research based on early mathematical ability categories (KAM) and overall. The results showed that the achievement of mathematical reasoning abilities that students acquire learning abductive-deductive strategy better than students who received the expository learning. In more detail of KAM categories, only middle category that show achievement of mathematical reasoning abilities better. While in upper and under categories have the same reasoning abilities achievements. This research is expected teachers can encourage students to do abduction and deduction in the learning achievement of students’ mathematical reasoning abilities.2017-07-11T20:43:45+00:00Copyright (c) 2017 Infinity Journal