Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR
<p>P-ISSN: <a title="P-ISSN" href="http://u.lipi.go.id/1378132074">2338-8706</a> E-ISSN: <a title="E-ISSN" href="http://u.lipi.go.id/1491793995"><span>2580-7145</span></a></p><p>Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains are journal containing the results of research and discussion in the field of education including education and teaching, learning strategies, curriculum, teaching media, learning methods, learning techniques, algebra, calculus, and mathematical problem solving. This scientific journal is a periodical journal published by the Jurusan Tadris Matematika FTIK IAIN Padangsidimpuan every June and December (2 editions per year). The contents are author’s responsibility.</p>IAIN PADANGSIDIMPUANen-USLogaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains2338-8706http://creativecommons.org/licenses/by-nc-nd/3.0/Meningkatkan Kemampuan Kognitif Siswa melalui Strategi Problem Posing Di SMP Negeri 7 Padangsidimpuan
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2356
<em>The purpose of this study was to improve students' cognitive abilities in the implementation of the mathematics learning process by using problem posing strategies. The type of research used is Classroom Action Research (CAR) in collaboration with teachers in Mathematics. This research was conducted at Padangsidimpuan Middle School 7. With research subjects class VII-1, amounting to 28 people. Data collection instruments used were tests. CAR procedures start from the planning, action, observation and reflection stages. This research was conducted in 2 cycles, each cycle having 2 meetings. The results of this study indicate that the cognitive abilities of students of class VII-1 SMP N 7 Padangsidimpuan increased by using the Problem Posing strategy. Because the increase in students' cognitive abilities through tests given during the learning process took place from the first cycle of the first meeting from 53.57% to 57.14% the first cycle of the second meeting and the second cycle of the first meeting from 75% to 85.14% the second cycle of the second meeting . In accordance with the indicators of the action of this study the results obtained have passed the predetermined average value of the average value of 75 until the second cycle of meeting 2 which is 77.92 with the percentage of students who complete 85.72.</em>Almira Amir
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-3080111410.24952/logaritma.v8i01.2356Penerapan Pembelajaran Jigsaw dalam Peningkatan Kemampuan Berpikir Kombinatorik Mahasiswa Teknik Industri
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2364
<em>This study was based on the advantages that faced by the Industrial Engineering Study Programme Students when follow lecture in Mathematical field. This study was a quasi research with using the one group retest-postest design. This study aims to analyze the gain of students’ combinatoric thinking ability through cooperative learning model type Jigsaw in Differential Application topic at Calculus course. The research sample are 30 students of Industrial Engineering Study Programme. The independent variable in this study was combinatoric thinking ability, while the dependent variable was cooperative learning model type Jigsaw. This study used the combinatoric thinking ability test instrument that has testet about its validity, reability, the difficulty level and the differentiator power. The research result showed that there was a gain of student’s combinatoric thinking ability through cooperative learning model type Jigsaw with n-gain value is 0.56 point and on medium level. The number of students who has combinatoric thinking ability was increased from 6 people to 14 people. The lecturer and the student’s activities have followed the rule of cooperative learning model type Jigsaw as well therefore it can improve student’s combinatoric thinking ability.</em>Hanifatul RahmiAdelia Alfama Zamista
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-30801152610.24952/logaritma.v8i01.2364Pengaruh Self Efficacy terhadap Kemampuan Komunikasi Matematis melalui Pembelajaran dengan Menggunakan Aplikasi SPSS
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2382
<p><em>This study aims to determine the effect of self efficacy on students' mathematical communication skills through learning using the SPSS application. The use of SPSS applications in learning, specifically in Education Statistics courses supports for students in subject matter. This research is a correlation approach. </em><em>All </em><em>students of Semester VII Mathematics Education at the Universitas Muslim Nusantara Al Washliyah</em><em> be </em><em>population in this study. By using a sample of research in Semester VII-A Academic Year 2019/2020. The research instrument consisted of tests of mathematical communication skills and self efficacy questionnaires. Tests and questionnaires were provided after the learning process using the SPSS application. This research analyzed by using regression analysis. The results of this study indicate that the correlation value of 0.660 means that it is a strong ability for students' mathematical communication skills. And the regression equation is </em><em>Y = </em>0,62<em>X</em> + 66,571.</p>Ramadhani RamadhaniJuli Yanti Harahap
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-30801274010.24952/logaritma.v8i01.2382Penerapan Pembelajaran Matematika Realistik untuk Meningkatkan Kemampuan Pemecahan Masalah Matematik Siswa Di MIN 2 Padangsidimpuan
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2355
<p><em>This study aims to improve the ability to solve mathematical problems with the application of realistic mathematics learning. From the students' initial abilities, it can be seen that students in class V MIN 2 Padang sidimpuan still have a fairly low average grade. The study used classroom action research as much as 2 cycles. The subjects of this study were students of class V MIN 2 Padangsidimpuan which were primary data. The research instrument in this study was a test of students' mathematical problem solving abilities and observation sheets. Based on the results of data analysis, it can be concluded that the average increase in students' mathematical problem solving ability from the initial test is 19.833 (19.833%) categorized as very poor to 51.083 (51.083%) which is not good enough in the first cycle and becomes 83.083 (83.083%) in the good category in the cycle II.</em></p>Lili Nur Indah Sari
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-30801415410.24952/logaritma.v8i01.2355Desain Media Pembelajaran Geometri SMP Menggunakan 3D Pageflip Professional Berbasis RME Terintegrasi STEM
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2374
<p><em>The focus of this research is to design geometry learning mediain junior high schools based on RME and integrated with Science, Technology, Engineering and Mathematics (STEM) using 3D Pageflip Proffesional,and to explain quality of the learning media. In the process of design and development of this media used is the ADDIE development model which begins with the stages analysis, design, development, and carried out an evaluation in each stages. Implementation stages will be continued in the following years research. This research resulted in a product in the form of geometry learning media in junior high schools especially eight grade according to purpose. Based on the validity test and practicality test the results obtained from the validation by material experts and media design experts were 4.09 namely 81.8% and 4.21 or 84.2%.Based on the criteria for the validity of the instrument, the criteria for "very valid" were obtained. And the practicality results, namely the results of teacher response questionnaire obtained an average of 4.26 or 85.19%, and the results of student questionnaire responses were 4.07 or 81.4%. Then based on the percentage criteria of practicality of the instrument, it is found that the criteria are very practical and the media can be implemented with minor revisions.</em><em></em></p>Feri Tiona PasaribuYelli Ramalisa
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-30801556610.24952/logaritma.v8i01.2374Upaya Peningkatan Kemampuan Pemecahan Masalah Matematika Siswa melalui Penerapan Metode Inquiry
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2409
<p>The initial problem that will be discussed in this study is the low ability of students to solve mathematical problems in class XI Accounting at SMK Negeri 1 Padangsidimpuan. This is obtained based on the results of daily tests of students, through interviews, and observations of the experience of teachers who teach at SMK. The purpose of the study was to analyze the effect of the inquiry method on students' mathematical problem solving abilities. This research is a class action research, the sample is class XI Accounting-2. The stages of implementation in this study are by designing, implementing, and reflecting collaborative and participatory actions with the aim of improving performance as a teacher so that students' abilities can improve. Based on the results of tests conducted in the first cycle obtained 70.97% ability of students to solve mathematical problems, while in the second cycle using the same method students' problem solving abilities obtained by 83.87%. So that conclusions can be drawn using the inquiry method the students' mathematical problem solving abilities can be increased.</p>Adek Nilasari HarahapNurdalilah Nurdalilah
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-30801677810.24952/logaritma.v8i01.2409Kemampuan Koneksi Matematika dalam Pembelajaran Kesetimbangan Kimia
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2412
<p><em>Mathematical connection is the ability of mathematics to connect conceptual and procedural knowledge, use mathematics in other subjects, use mathematics in life activities. Mathematics is a difficult subject for students as well as chemical equilibrium material, because both lessons are abstract. Mathematical ability is a basic ability that students must master in Chemical Equilibrium. Determination of Equilibrium Assets (Kc and Kp) requires mathematical connection capabilities. The results obtained from the Chemical Equilibrium test given are still low with a percentage of 65% for the calculation of removal, 45% root shape and the ability to multiply and divide the decimal number to 67%. This is because learning mathematics and chemical equilibrium are difficult subjects so students are less interested.</em></p>Lelya Hilda
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-30801799210.24952/logaritma.v8i01.2412Peningkatan Hasil Belajar Matematika Siswa SMK dengan Menggunakan Media Belajar Macromedia Flash
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2413
<em>The purpose of this research is to analyze the incarse in the learning outcomes between students whose leraning uses macromedia flash media and the students whose leraning using power point media. This research was conducted using quantitative research through quasi-experimental methods. This study includes two variables, namely learning using macromedia flash and power point as independent variable and learning outcomes as the dependent variable. In this study, researcheres used all students in the one of private high school in the Medanas a study population follwed by sample selection using a random sampling methods. The result obtained are class of XII A-3 as an experimental class and class of XII A-4 as control class. In collecting data, researchers used an instrument in the form of a students’s mathematics learning achievment test which was given twice, namely before being given learning using macromedia flash (pre test) and after being given learning using macromedia flash and power point (post test). Furthermore, hypotesis testing is performed on the data that has been obtained using the t-test with the help of the SPSS program. Hypothesis testing resukt show that increase in mathematics learning outcomes of students whose learning uses macromedia flash media is higher than students whose learning uses power points. Therefore, it is recomended that learning to use macromedia flash media be used as an alternative learning media for teachers to improve student learning outcomes and the other ability of students.</em>Siti KhayroiyahHaryati Ahda Nasutiom
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-308019310410.24952/logaritma.v8i01.2413Penerapan Model Student Facilitator and Explaining (SFE) dengan Media Poster untuk Meningkatkan Kemampuan Representasi Matematis Siswa
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2380
<em>This study used quantitative approach with experiment method. The research design was posttest-only control group. The purpose of this study was to investigate the effect of cooperative learning model type Student Facilitator and Eksplaining (SFE) with poster media through students’ mathematical representation ability. The population was all of seventh grade students in SMPN 7 Sungai Penuh. Two sample were choosen withdraw. Conventional method was implemented in control group, while cooperative learning model type Student Facilitator and Eksplaining (SFE) with poster media was implemented in experiment group. The instrument in this study was students’ mathematical representation ability test that the test items was analyzed first. The instrument was given in the end of learning process in both groups. The result of the data analysis was obtained that: (1) the average of students’ mathematical representation ability test in control group was 66,67 while in experiment group was 73,43; (2) the students’ mathematical representation ability who study under cooperative learning model type Student Facilitator and Eksplaining (SFE) with poster media was higher than who study under conventional method; (3) there was an effect of cooperative learning model type Student Facilitator and Eksplaining (SFE) with poster media through the students’ mathematical representation ability.</em>Sonia Andam SariEline Yanty Putri NasutionLaswadi Laswadi
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-3080110511810.24952/logaritma.v8i01.2380Hasil Belajar Matematika Siswa Sekolah Dasar: Tingkatan Kelas dan Gender
http://jurnal.iain-padangsidimpuan.ac.id/index.php/LGR/article/view/2431
<em>This study aims to examine student mathematics learning outcomes in terms of each grade level in elementary school and gender. This study uses a descriptive design conducted at SD Negeri 104245 Tumpatan. Data obtained by looking at the value of student mathematics learning outcomes (documents), the subject of which a total of 300 people (163 male and 138 female). Data were analyzed with descriptive analysis techniques using the normal curve approach. The results showed that the average mathematics learning outcomes of class I students for male students were 72 with low categories and women scored 73 with medium categories, class II students for men rated 71 with low categories and female grades 76 with medium categories, students class III 70 with low categories for men and women, class IV students with a score of 82 with a moderate category both male and female students, class V with a grade of 82 with a moderate category obtained by men and women, and class VI students for males, 80 were obtained in the medium category and women scored 83 in the medium category.</em>Nurdiana SiregarDiyah HoiriyahLiya Sapitri
Copyright (c) 2020 Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains
2020-06-302020-06-3080111913010.24952/logaritma.v8i01.2431