Authors:Syamsul Huda, Haya Nadirah Kharisma, Isti Qoma, Kittisak Jermsittiparsert Pages: 1 - 6 Abstract: The development of mathematical reasoning ability of students affect the process of settlement of problems exiting in the process og learning matheatics. This study has the objective to determine the learning model that is effective between the Problem Based Learning models and the Learning Cycle 5E models. This study using quantitative study, data analysis techniques using T-test. The study results obtained it can be concluded that, mathematical reasoning ability of students has increased more effectively when the learning proces apply the Problem Based Learning models. PubDate: 2020-01-23 DOI: 10.24042/djm.v3i1.5320 Issue No:Vol. 3, No. 1 (2020)

Authors:Burhan Eko Purwanto, Icha Jusmalisa, Indah Permata Sari, Agus Jatmiko, Andika Eko Pasetiyo Pages: 7 - 16 Abstract: The problem faced by students in slow learning is in terms of communication. The use of Auditory, Intellectually, Repetition (AIR) and Cooperative Think Pair Share (TPS) types is needed to help students communicate mathematically in expressing mathematical ideas. This study aims to determine whether or not there are differences in mathematical communication skills of students using the Auditory, Intellectually, Repetition (AIR) learning model with students who use Think Pair Share (TPS) Cooperative learning models. This research uses a quantitative approach using the Quasi Experiment method. The research design is in the form of posttest only, non-equivalent group design. Testing data using the T test with Independent Samples T-Test. Based on the results of hypothesis testing obtained p-value> α 0.05. So it was concluded that there were indications of differences between Auditory, Intellectually, Repetition (AIR) learning models with (TPS) Cooperative learning models and superior (AIR) learning models compared to Cooperative learning models of (TPS) Type in influencing students' mathematical communication skills. PubDate: 2020-01-23 DOI: 10.24042/djm.v3i1.5650 Issue No:Vol. 3, No. 1 (2020)

Authors:Munifah Munifah, Windi Septiyani, Indah Tri Rahayu, Rahmi Ramadhani, Hasan Said Tortop Pages: 17 - 26 Abstract: Objectives The ability to solve problems is to gain knowledge and motivation in the problem solving process of students. The researcher used the IMPROVE and OSBORN learning models to improve problem solving skills. The IMPROVE and OSBORN learning models emphasize the development of optimal mathematical skills and generate new ideas in the process of problem solving. This research is used to see the impact of the IMPROVE learning model and OSBORN learning model which is better in mathematical problem solving abilities. This research uses the Quasy Experimental Design method. Hypothesis testing uses an independent sample test. The conclusion of the study is the mathematical problem solving ability of students who use the IMPROVE learning model is better than the mathematical problem solving abilities of students who use the OSBORN learning model. PubDate: 2020-01-23 DOI: 10.24042/djm.v3i1.5335 Issue No:Vol. 3, No. 1 (2020)

Authors:Muhammad Syahrul, Ummu Kalsum, Cindi Nadya Putri, Lilis Mardiyana, Jutamat Sutduean Pages: 27 - 36 Abstract: We already know that, there are many learning models that are used to improve the ability to understand mathematical concepts. In this study, researchers will use two learning models that have been previously studied. But this study is different from previous studies, this study aims to find a better model in improving the ability to understand students' mathematical concepts through test results by applying the flipped classroom and heuristic vee models. The method used in this study is quasi-experimental (quasi-experimental) and testing using the T and N-Gain test. Based on the results of the data analysis conducted, it can be concluded that increasing the ability to understand mathematical concepts of students who use the flipped classroom learning model is far better than vee heuristics. PubDate: 2020-01-23 DOI: 10.24042/djm.v3i1.5689 Issue No:Vol. 3, No. 1 (2020)

Authors:kurnia kandari, Luvy Sylviana Zanthy Pages: 37 - 44 Abstract: The purpose of this research is to analyze the students' mathematical connection ability before and after getting Contextual Teaching and Learning. The subjects were the 26 students of class VIII-A at SMI 1 MANIIS, Purwakarta Regency. The research used the descriptive method with the qualitative approach. The data for the analysis were from the test to student consist of 5 questions with 4 different indicators. The results shows that all students have moderate in mathematical connection ability with the overall results of 65.83%. For the results of each indicator, there is one indicator that has not been met, understanding the equivalent representation from one procedure to another one, or from one concept to another concept. So it can be concluded that the mathematical connection ability in terms of the Contextual Teaching and Learning approach has a significant effect. PubDate: 2020-01-23 DOI: 10.24042/djm.v3i1.4467 Issue No:Vol. 3, No. 1 (2020)

Authors:M Zain Irwanto, Prabu Rohman, Mahfuzh Mahfuzh, Ahmad Rozikin, Thanaporn Sriyakul Pages: 45 - 52 Abstract: Numerical ability in learning mathematics is an important thing for students to facilitate teaching and learning process. SAVI and SNAWBALLING are learning models that can facilitate the development of numerical abilities of students. The purpose of this study is to determine the effect of SAVI and SNOWBALLING learning models on the numerical ability of students. This research is a type of research Quasy Experimental Design. The sampling technique used was class random technique with row and series material. The instrument used to collect data was a numerical ability test in the form of a description item. The data analysis technique of this study used the T-Test analysis technique. The results of this study are that the two models do not have the same numerical ability of students, meaning that there are differences in the impact given by the SAVI learning model and the SNOWBALLING learning model on numerical ability. The numerical ability of students using the SAVI learning model is better than using the SNOWBALLING learning model. PubDate: 2020-01-23 DOI: 10.24042/djm.v3i1.5690 Issue No:Vol. 3, No. 1 (2020)

Authors:Sarah Inayah, Ari Septian, Ramdhan Fazrianto Suwarman Pages: 53 - 64 Abstract: This study aims to explain the procedural fluency of students in numerical methods courses. Procedural fluency refers to knowledge of procedures, about when and how to use them appropriately, and the skills to carry out procedures flexibly, accurately, and efficiently. The method in this study uses a descriptive method with a qualitative approach and data analysis techniques for the Miles and Huberman models. In this study also performed triangulation of techniques by conducting interviews to strengthen the test result data. From the data analysis, it can be concluded that regarding the smoothness in students' procedural procedures in solving problems related to numerical methods courses, students are able to solve problems with more than one method. However, some students have not been able to streamline steps and make accurate calculations. In addition, mastery in operating a scientific calculator needs to be improved so that students can be more efficient and get more accurate answers. PubDate: 2020-01-23 DOI: 10.24042/djm.v3i1.5316 Issue No:Vol. 3, No. 1 (2020)

Authors:Fery Firmansah, Tasari Tasari Pages: 65 - 72 Abstract: A graph that has odd harmonious labeling properties is called an odd harmonious graph. The purpose of this research is to obtain a new class graphs construction which is a family of odd harmonious graphs. The research method used consisted of several stages, namely research preparation, research investigation and verifivation of research results. The results of this study, we will give a line amalgamation construction of n double quadrilateral graphs DQ, denoted by *DQ(n) with n>= 1 and graph obtained by connecting between two graphs *DQ(n) with line graph L2, denoted by *(DQ(n),L2,DQ(n)). It has further been proven that *DQ(n) and *(DQ(n),L2,DQ(n)) have odd harmonious labeling properties, such that all of them are odd harmonious graphs. PubDate: 2020-01-23 DOI: 10.24042/djm.v3i1.5712 Issue No:Vol. 3, No. 1 (2020)

Authors:Windia Hadi, Ayu Faradillah Pages: 73 - 82 Abstract: Trigonometry is a part of mathematics in learning that is related to angles. The purpose of this study was to determine the effect of the application of discovery learning methods in students' mathematical proof ability on trigonometry. The research method used in this study is quasi-experimental. The population in this study was the second semester of 2016/2017. The sample was 66 people who were determined by purposive sampling. The instrument used in this study was a mathematically proof ability test. Analysis of the data used is the t-test. The results of this study are (1) based on an average score of mathematical proof ability The student's mathematical proof ability in applying the Discovery Learning Method to trigonometry is not higher than the mathematical proof ability of students who do not use the discovery method (2) there is no significant influence in the application of learning methods Discovery in students' mathematical proofs on trigonometry. PubDate: 2020-01-23 DOI: 10.24042/djm.v3i1.5713 Issue No:Vol. 3, No. 1 (2020)

Authors:Muhamad Yasin, Nasiroh Nasiroh, Abi Fadila, Sitti Hartinah, Novalia Novalia Pages: 83 - 88 Abstract: Every life needs a very important role especially the role in education. Improving the quality of education can be pursued by the use of appropriate learning models so as to improve students' reasoning abilities. The purpose of this study was to determine the differences in the influence of Novick's learning model and the learning model that is centered on educators on students' mathematical reasoning abilities, Knowing the interaction between learning models and SAVI learning styles (Somatic, Auditory, Visualization, Intelectually) on mathematical reasoning abilities learners. This research uses the Quasy Experiment Design method. The results obtained from this study are that learning by using Novick's learning model is more effective against mathematical reasoning for students, there is no interaction between Novick's learning model and SAVI learning style on mathematical reasoning abilities. PubDate: 2020-01-31 DOI: 10.24042/djm.v3i1.4907 Issue No:Vol. 3, No. 1 (2020)