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NUMERICAL (Jurnal Matematika dan Pendidikan Matematika)

numerical
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Published by Universitas Ma'arif Lampung

ISSN : - EISSN : - DOI : -

Core Subject : Education,

Mathematics

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Articles 6 Documents

Search results for , issue "Vol. 2 No. 2 (2018)" : 6 Documents clear

Sistem Cerdas untuk Inovasi Blender Control System Menggunakan Fuzzy Control System dengan Metode Mamdani Khomarudin Fahuzan; Uke Ralmugiz
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 2 No. 2 (2018)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

This research aims to establish a control system on blender by using fuzzy control system with mamdani method. In this study, researchers used input in the form of hardness level and volume of fruit to be blend, while the output is blend time (0 to 180 seconds) with assumption of constant blender velocity). Researchers used fuzzy inference control system with Mamdani method with some stages: fuzzification, inference, rule base, and defuzzification. Fuzzification changes the hardness of the fruit and the volume into a value. Inference created fuzzy output using pre-made rules. Defuzzification counted the time it takes to blend into output. Based on the results of the research, the results obtained for the sample of fruit with a level of hardness of 40%, and volume 4 (400 ml), in obtaining the minimum time required to smooth the fruit about 79 seconds. Thus the fuzzy control system can be used as an innovation to make the control system in blender. This system not only applies to blenders only, but also can be applied to other machines using fuzzy control system.

Identifikasi Faktor-Faktor yang Mempengaruhi Kemampuan Pemecahan Masalah Matematika Ni Komang Vonie Dwianjani; I Made Candiasa
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 2 No. 2 (2018)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

This research aimed for 1) analyzing the factors which contributed the ability to solve mathematical problems and (2) identifying the domination of the aforementioned factors. This research was conducted to grade 8 in all state junior high schools in the city of Singaraja, academic year of 2017/2018 with 377 participating students which were taken with stratified cluster random sampling technique. This research method was an quantitative ex-post facto research. The data of this research were taken using story math problem about SPLDV, Pythagoras, Lingkaran and were analyzed with factor analysis. The research has found that the factors which contributed the ability to solve mathematical problem are identify problem (identify), define goal (define), explore possible strategies (explore), act on strategies (act) and look back (look). These five factors could be categorized into two components, namely: analytical ability component which consists of identify problem and define goal , and systematical ability component which consists of explore possible strategies, act on strategies and look back. Furthermore, it was also found that the factors which dominated the ability to solve mathematical problem was executing the act on strategies and followed by explore possible strategies, identify problem, define goal, and look back.

Konflik Kognitif Internal Siswa dalam Menyelesaikan Masalah Matematika Ditinjau dari Proses Asimilasi Akomodasi Ratnah Lestary; Subanji Subanji; Rustanto Rahardi
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 2 No. 2 (2018)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

This study aims to describe the internal cognitive conflicts that occur to students when they were solving mathematics problems. There were two participants in this research. They were 7th grade students from SMPN 1 Malang. The first participant was a student who has experienced internal cognitive conflicts and has capability to resolve it as well as the mathematics problems. Meanwhile, the second participant was a student who has experienced internal cognitive conflict but cannot resolve that conflict and also the mathematics problems. This research was used descriptive qualitative. The data of this study was gathered from studentsâ€™ test on cognitive conflict and interview which was adapted from Newman's interview procedure. It was found that, the students who are able to find a relationship between the ratio of the number of workers and the number of chairs produced in a day, have capability to resolve their cognitive conflicts so that it brings them to the right problem solving. Meanwhile, the students that fail to build a relationship between the comparison concepts with mathematics problems and fail to find the relation between the numbers of people with the number of chairs in one day can not resolve the cognitive conflict so that they solve the problems in the wrong ways.

Pengembangan Media Pembelajaran Matematika Berbantu Adobe Flash Melalui Etnomatematika Pada Rumah Adat Lampung Resty Khairina Vevi Martyas Pratami; Dona Dinda Pratiwi; Mohammad Muhassin
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 2 No. 2 (2018)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

This research was conducted to determine the appropriateness of learning media and to know the response of the learners to the mathematics learning media assisted by Adobe Flash through ethnomathematics on Lampung Traditional House for eight grade of junior high school on polyhedron subject. This research type was research and development (R&D). The research and development steps were based on the Bord and Gall model. The instrument of data collecting was questionnaire with Likert scale. The data analysis technique used in this research was quantitative descriptive data analysis. The result of the research of mathematics learning media assisted by Adobe Flash through Ethnomathematics at Lampung Traditional House obtained the average value of material experts 3.62, media experts 3.47, linguists 3.67, and cultural experts 3.50 with "Valid" criterion and worth to use. The studentsâ€™ response to learning media in small group trials obtained the "interesting" criterion with an average score 3.24 and in large group trials obtained a "very interesting" criterion with an average score 3.47. The teacher's response to learning media earned the "excellent" criterion with an average score 3.45.

Pengaruh Model Pembelajaran Example Non Example berbantuan Poster Comment Terhadap Pemahaman Konsep Matematis Doni Sabroni; Budi Koestoro; Asmiati Asmiati
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 2 No. 2 (2018)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

This research has a purpose to know whether there is influence of the use of learning model Example Non Example assisted Poster Comment to the comprehension ability of mathematical concept. This research type is keyexperimental design, this research population is all students of class VII Madrasah Tsanawiyah (MTs) Al-Hidayah Srikuncoro academic year 2016/2017. In this research, the data analysis used is by using variance analysis (anova) one cell road is not same. The result of this research is that there is influence of learning model of Example Non Example with Poster Comment with the ability of understanding mathematical concepts, which the application of learning model Example Non Example with Poster Comment gives better concept of mathematics concept compared with the application of conventional model supported by Poster Comment and also the application of learning model Example Non Example with Poster Comment provides better mathematical concept capability compared to conventional learning model, and conventional teaching model application provides mathematical concept capability similar to conventional modeled learning application with poster comment.

Pengaruh Model Pembelajaran Kooperatif Tipe Think Pair Share (TPS) berbantuan Pendekatan Investigasi terhadap Kemampuan Komunikasi Matematis Rifa Fahrullisa; Fredi Ganda Putra; Nanang Supriadi
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 2 No. 2 (2018)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

Mathematical communication ability of learners is still relatively low, this is allegedly caused by the conventional learning model that is still applied by educators. The authors in this study apply cooperative type model of TPS assisted investigative approach, because the type and approach is expected to be suitable to improve the mathematical communication ability of learners. The purpose of this research is to see the effect of Cooperative Learning Model Type Think Pair Share (TPS) assisted by an Investigation Approach to Mathematical Communication Ability. In this research including quantitative research because the data is processed in the form of numbers. Use experimental experimental quasy experiment type. To know the effect on the ability of mathematical communication owned peserta didiksetelah applied learning model is the purpose of the implementation of research. The instrument in this research is the test of mathematical communication ability on the matter of scale and comparison. Further data that have been obtained will be calculated by using Analysis of Variance (ANAVA) one unequal cell road. The result of this research is there is influence of thinking pair share learning model assisted by investigative approach to mathematical communication ability of learner, which in class which applied by model of learning pair help coupled with better investigation of mathematical communication ability compared with conventional learning model and TPS learning model.

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