http://e-journal.stkipsiliwangi.ac.id/index.php/infinity/issue/feedInfinity Journal2017-10-01T22:49:21+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 design 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/302ANALYSIS OF STUDENTS’ MATHEMATICAL COMMUNICATION ABILITY BY USING COOPERATIVE LEARNING TALKING STICK TYPE2017-10-01T22:49:18+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.2017-09-12T16:50:16+00:00Copyright (c) 2017 Infinity Journalhttp://e-journal.stkipsiliwangi.ac.id/index.php/infinity/article/view/303LANGUAGE LITERACY AND MATHEMATICS COMPETENCE EFFECT TOWARD WORD PROBLEMS SOLVING2017-10-01T22:49:19+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>2017-09-12T16:50:16+00:00Copyright (c) 2017 Infinity Journalhttp://e-journal.stkipsiliwangi.ac.id/index.php/infinity/article/view/283ANALYSIS OF STUDENTS’ LEARNING OBSTACLES ON LEARNING INVERS FUNCTION MATERIAL2017-10-01T22:49:14+00:00Krisna Satrio Perbowokrisna_satrio@uhamka.ac.idRestu Anjarwatirestu.sukamatika@gmail.comThis research is based on the presence of obstacle in learning mathematics on inverse function. This research aims to analyze the learning obstacle, to know the types of error that is suffered by the students in learning inverse function. Kind of this kualitative research descriptive with data triangulation. The research subjects are high school students which is contained of 74 students and was taken 6 students to be main sample. The data of students’ error is obtained from the writen test result, the students’ false answers are identified into the type of error. Then it was chosen several students to be interviewed. Which the analysis result finding data in this research showed there are 4 types of errors, which are concept error, procedure error, counting error and concluding error. An obstacle which appear in learning inverse function is influenced by two factors, i.e internal factor and eksternal factor. Internal factor is showed by the students’ motivation in following learning and students’ skill in receiving learning material. While the eksternal factor is showed by the curriculum which applied in school with acceleration class caused many narrow learning time, teaching materials that is less complete with the discussion of question sample.2017-09-12T16:50:15+00:00Copyright (c) 2017 Infinity Journalhttp://e-journal.stkipsiliwangi.ac.id/index.php/infinity/article/view/349THE RELATION BETWEEN SELF-EFFICACY TOWARD MATH WITH THE MATH COMMUNICATION COMPETENCE2017-10-01T22:49:21+00:00Sylvia Rahmisylviarahmi.sr@gmail.comRifka Nadiarifkanadia28@yahoo.comBibih Hasibahbibih_hasibah@yahoo.comWahyu Hidayatwahyu@stkipsiliwangi.ac.id<p>The aim of this research is to analyze the relationship between <em>self-efficacy </em>toward mathematics with mathematical communication competence. The design of this research is survey and correlation technique. The research instruments used in this research are math communication competence test and attitude scale. The instruments used are 5 questions about math communication competenca teat and 28 statements about self-efficacy. The research population is all student of SMP Negeri 1 Soreang. With samples of this research were 70 students of 7th grade student chosen by cluster random sampling. The data analyzed quantitatively done through math communication data and self-efficacy attitude scale. SPSS 20 used in this research. The result shows that student self-efficacy influences students math communication competence.</p>2017-09-12T16:50:15+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 STUDENTS2017-10-01T22:49:07+00:00Anggita Maharanianggi3007@yahoo.co.idLaelasari Laelasarilala.mathunswagati@gmail.com<p>This study aims to expose the interactions that occur in the process of mathematics learning and describe a method of learning motivation and logical mathematical thinking of students in classes. 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.</p>2017-09-12T16:50:10+00:00Copyright (c) 2017 Infinity Journal