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Imagery Model of Pre-service Mathematics Teacher on Graphing Rational and Irrational Functions Darmadi, Darmadi
(JRAMathEdu) Journal of Research and Advances in Mathematics Education Vol. 3, No. 2, July 2018: Issue In Press
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jramathedu.v3i2.6375

Abstract

Students of mathematics teacher candidates are required to have good math and communication skills. Therefore, students of mathematics teacher candidates need to have good imagery modalities. With descriptive qualitative research method on the students of mathematics education program of FKIP Universitas PGRI Madiun, obtained the result that there are 10 models of students imaginary student of mathematics to graph of rational-irrational function. Mathematics learning or lectures need to be emphasized to enrich students imaginings on rational-irrational function graphs.Keywords: imagery, irrational-rational function    
SYHNTHESIS OF CHITOSAN MODIFIED POLYURETHANE FOAM FOR ADSOPRTION OF MERCURY (II) IONS Darmadi, Darmadi; M, Irfan; M, Iqhramullah; Marlina, Marlina; Lubis, Mirna Rahmah
Jurnal Bahan Alam Terbarukan Vol 7, No 1 (2018): June 2018 [Nationally Accredited]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v7i1.13614

Abstract

Mercury from the traditional gold mining activities in Aceh Jaya Regency causes water source and thus residents are exposed to mercury metals. In organic and inorganic conditions, mercury is toxic to the human body, causes damage to the nerve system, kidney failure, heart failure, blood pressure disorders, and damage to the immune system. The problem of mercury contamination can be chemically solved in various ways. This research uses polyurethane foam to adsorb mercury from water. The adsorption and selectivity of polyurethane foam adsorption can be improved through modification with Chitosan. In this research, preheating temperature, glycerol and toluene di-isocyanate (TDI) compositions greatly affect the physical form of foam. The condition under which optimal glycerol composition used for synthesizing the polyurethane foams is 20% (w/w of mixture A). This glycerol composition results in polyurethane foams with an optimum ratio of the mixture A/TDI/distilled water of 2 : 1 : 1. The best adsorption is obtained with polyurethane foam added by 2.5% Chitosan. The optimum mercury adsorption 25% is resulted from the operating time of 60 minutes with adsorption capacity of 0.313 mg/g. For Chitosan modified polyurethane foam, research points out that the reaction is the second order reaction. The result concluded that the polymer has semi crystalline crystallization and melting temperatures.
The Imagery Models of Mathematics Teacher Candidates on Graph of Rational and Irrational Functions Darmadi, Darmadi
JRAMathEdu (Journal of Research and Advances in Mathematics Education) Vol. 3, No. 2, July 2018
Publisher : Department of Mathematics Education, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jramathedu.v3i2.7310

Abstract

Mathematics teacher candidates are required to have both expertise and communication skills. Therefore, they should have a good imagery model. The present study is a descriptive qualitative research  that involved the students of mathematics education program, FKIP, Universitas PGRI Madiun. The result shows there are 10 models of rational-irrational function graphs that are proposed by the candidates of mathematics teacher involved in the present study.. Mathematics lectures should enrich learning activities and materials to stimulate and develop students' capability in devising the graphs of rational-irrational functions.
Meningkatkan Prestasi dan Keaktifan Belajar Siswa SMP Negeri 13 Madiun melalui Program Adiwiyata Nartini, Nartini; Darmadi, Darmadi
Jurnal Tadris Matematika Vol 2, No 1 (2019)
Publisher : Institut Agama Islam Negeri (IAIN) Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (639.108 KB) | DOI: 10.21274/jtm.2019.2.1.1-10

Abstract

Adiwiyata is one of the programs of the Ministry of the Environment to encourage the creation of knowledge and consciousness of residents in environmental preservation efforts by involving parents in learning. This paper discuss the increased of achievement and passion in learning, as well as the response of the students in class VIIF SMP Negeri 13 Madiun on the subject of the triangle and quadrilateral. The research method used is the Classroom Action Research (CAR). Data collected by test, observation, and question form. Data analysis using grade analysis of study, level of study, and the students attitude. The results showed: 1) Adiwiyata increase the achievements of students in class VIIF SMP Negeri 13 Madiun; 2) Adiwiyata increase the passion in learning of the student in class VIIF SMP Negeri 13 Madiun; 3) Student in class VIIF SMP Negeri 13 support adiwiyata program to improve learning achievements and passion in learning.
PENERAPAN MODEL PEMBELAJARAN INKUIRI TERBIMBING UNTUK MENINGKATKAN HASIL BELAJAR PESERTA DIDIK PADA MATA PELAJARAN IPA KELAS VII 4 SMPN 03 TELUK KUANTAN TAHUN PELAJARAN 2018/2019 Turrahmah, Laila; Yustina, Yustina; Darmadi, Darmadi
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan VOL 6 : EDISI 1 JANUARI-JUNI 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract

Abstract: The study was conducted in classes VII 4 SMP 03 Teluk Kuantan school year to determine the increase learning outcomes of students by implementing guided inquiry learning model. This research is a classroom action research conducted in two cycles of planning, execution and observation and reflection. The data collected in this study is the learning outcomes that emphasizes on three areas, namely knowledge, attitudes and skills. Data were collected using tests and observation sheet. The results showed learning outcomes in every sphere has increased. The cognitive value seen from the results of daily tests on the first cycle that 84,80 (B) is increased in the second cycle is 94,23 (A). Students who complete the first cycle of 19 students (73,07%) and increased in the second cycle is 26 (100%). On average of attitudes value in the first cycle, namely 70,34 (D) and increased in the second cycle 81,60 (C). Average of skills value in the first cycle, namely 70,16 (C) and increased in the second cycle is 86,40 (B). It can be concluded that the application of guided inquiry learning model can improve learning outcomes class VII 4 SMP 03 Teluk Kuantan in the academic year 2018/2019.Key Words: Model of Guided Inquiry, Learning Outcomes
TINGKAT LITERASI ILMIAH BUKU PEMBELAJARAN BIOLOGI KELAS XII Amelia, Resty Ayu; Natalina, Mariani; Darmadi, Darmadi
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan VOL 6 : EDISI 1 JANUARI-JUNI 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract

Abstract: This study aims at describing the feasibility level of learning books according to the National Education Standards Agency (BSNP) and the scientific literacy level of class XII biology learning books based on 4 dimensions, namely science as a body of knowledge, science as a way of thinking, science as a way of investigation and science and its interactions with technology and society. This study uses a quantitative approach with the content analysis method. The sample in this study was the biology learning book for class XII by Irnaningtyas in the 2013 curriculum which was chosen by purposive sampling technique. The research data were obtained from the results of book feasibility and the level of scientific literacy by using book feasibility instruments according to the BSNP and a sheet of scientific literacy level analysis based on 4 dimensions. Stages of analysis were divided into 2 stages, namely the stage of book feasibility analysis and analysis of the level of scientific literacy of biology learning books. The data analysis was using descriptive statistical methods. The results of the data analysis show that the level of feasibility in the analyzed learning book has been declared feasible according to BSNP. At the level of scientific literacy, only the scientific dimension as a body of knowledge gets a good category. The results of this study can be used as material in the development of learning books based on the content of 4 dimensions of scientific literacy in balanced proportions. Key Words: Level of Literacy, Scientific Literacy, Learning Book, 2013 Curriculum
Kajian Tingkat Kepuasan Pengguna Jasa terhadap Kinerja Pelayanan Angkutan Penyeberangan Lintas Kariangau – Penajam, Balikpapan Darmadi, Darmadi; Arifin, Muhammad Zainul; Agustin, Imma Widyawati
Media Teknik Sipil Vol 14, No 1 (2016): Februari
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (756.898 KB) | DOI: 10.22219/jmts.v14i1.3288

Abstract

The objectives of this study are for knowing costumer satisfaction level of ferry service performance Kariangau– Penajam trajectory, Balikpapan based on customer perception with existence of change of ship operational system from 8:4 (8 ship operated and 4 standby) become 10:2 (10 ship operated and 2 standby) and also for getting alternative solution to overcome problems which there is still after imposed of new ship operational system. This study uses Importance-Performance Analysis (IPA) and Customer Satisfaction Index (CSI)methods. Result of study pursuant to analysis of IPA quadrant, service attributes becoming major priority to be improve repaired by its performance are attribute hygiene of bath room/toilet in ship , accuracy of arrival time in destination port, accuracy of time voyage duration, condition of air circulation in ship  and demonstration of usage of safety appliance in ship. CSI calculation result based on customer perception obtained value 69% that representation that assessment of respondent to ferry  service performance of Kariangau – Penajam trajectory enter in satisfied category. 
PENGEMBANGAN MEDIA KOMIK DENGAN MODEL INKUIRI TERBIMBING BERBASIS LITERASI SAINS PADA MATERI SISTEM PEREDARAN DARAH PADA MANUSIA BAGI SISWA KELAS VIII SMP Lestari, Aulia; Natalina, Mariani; Darmadi, Darmadi
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 7, No 1 (2020): EDISI 1 JANUARI-JUNI 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract

Abstract:This research aimed to produce comic media with guided inquiry models based on scientific literacy on circulatory system in humans for grade VIII junior high school students. It had been done in SMPN 4 Pekanbaru and the Faculty of Teacher Training and Biology in University of Riau on April of October 2019. This typeofresearch was a Reseach and Development (R&D) study using the ADDIE model which consists of five stages namely analyze, design, development, implement, and evaluate. This research only reached the development stage by conducting validation by validators and limited trials in stages I and II. The data obtained were analyzed statistically descriptive. The evaluation of the developed comic media includes 6 aspects, namely aspects of comic content, aspects of linguistic / communication, aspects of presentation, aspects of overall appearance, aspects of guided inquiry, and aspects of scientific literacy. The results of the average validationwith a guided inquiry model based on science literacy gained a score of 3.47 in the very valid category. The average results of the limited trial phase I get a score of 96.42% with a very good category and a limited trial phase II get a score of 94.28% with a very good category. Based on these data it can be concluded that the development of comic media with a guided inquiry model based on scientific literacy in the material of the circulatory system in humans for grade VIII junior high school students gets very valid and very good categories so that it is appropriate to be used as a source of learning and can be implemented in the learning process at school.KeyWords: Comic Media, Guided Inquiry, Scientific Literacy, the Material of Circulatory System In Human
ANALISIS BUKU TEKS PELAJARAN IPA SMP KELAS VII PADA BUKU ERLANGGA DAN SOAL LATIHAN ULANGAN BERDASARKAN LITERASI SAINS Erida, Zulfa; Natalina, Mariani; Darmadi, Darmadi
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 7, No 1 (2020): EDISI 1 JANUARI-JUNI 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract

Abstract: This study aims to describe the science literacy of science textbooks for junior high school grade VII based on 4 dimensions, namely science as the body of knowledge, scienceas a way of thinking, science as a way of investigation and science and its interaction with technology and society and describe scientific literacy in practice questions the repetition on the seventh grade science book of SMP based on the 2015 PISA framework is competency and knowledge aspects. This research uses a qualitative approach with a content analysis method. The subject of this research is the science textbook class VII published by Erlangga Curriculum 2013. The research data obtained from the results of scientific literacy analysis of books using scientific literacy level analysis instruments based on 4 dimensions of scientific literacy and scientific literacy about repetition exercises using scientific literacy analysis sheet instruments based on 2 aspects of the PISA 2015 framework. Data analysis uses descriptive statistical methods. The results of data analysis showed that scientific literacy in the category of science as an investigation has the highest percentage with a score of 45.48%. The results of the scientific literacy analysis data in the multiple choice test questions show that the aspect of knowledge has a higher percentage than the competency aspect of 86.44% with very good criteria. Whereas the results of the retrial essay practice questions have a higher percentage of 61% with good criteria.KeyWords: Science Literacy, PISA 2015 Framework, Natural Science textbooks for Junior High School, Test questions on tests
PENGEMBANGAN MODUL DENGAN MODEL INKUIRI TERBIMBING BERBASIS LITERASI SAINS PADA MATERI SISTEM PEREDARAN DARAH PADA MANUSIA BAGI SISWA KELAS VIII SMP Setiawati, Ratih; Natalina, Mariani; Darmadi, Darmadi
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 7, No 1 (2020): EDISI 1 JANUARI-JUNI 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract

Abstract: This study aims to produce modules with guided inquiry models based on quality scientific literacy. This research was carried out in the Biology Education Laboratory of the Faculty of Teacher Training and Education, University of Riau and the state junior high school 4 Pekanbaru in April-October 2019. The type of researchused is Research and Development (R&D). Module development implemented refers to the ADDIE model with the stages of Analyze, Design, Development, Implementation, Evaluation. This research was only carried out until the Development stage by conducting validation by a validator and a limited trial phase I by Biology Education Students of Teaching and Education Faculty of University of Riau, and a limited trial phase II by students of state junior high school 4 Pekanbaru. The assessment of the developed modules includes 5 aspects, namely the module format and graphic aspects, presentation techniques, the syntax of guided inquiry models, indicators of scientific literacy dimensions, and language assessment. The results of the average validation with the scientific inquiry based guided inquiry model was gained a score of 3.58 with a very valid category. The average results of the limited trials phase I and II was gained a score of 3.67 with a very good category. Based on these data it can be concluded that the modules with guided inquiry models based on science literacy that have been developed arecategorized as quality modules and can be used on a wide scale.KeyWords: Modules, Guided Inquiry Models, Scientific Literacy
Co-Authors Abdul Aziz Adisalamun Adisalamun Agus Suhartono Agustin, Adinda Eka Ahyani, Ahyani Alhuda Amelia, Resty Ayu Andriani, Laura Ikhsa Aryuningtias, Inda Rizky Asiska Permata Dewi Asmara, Josi Farda Khafid Audia, Clara Ayu, Giovanni Ayuningtias, Ratih Balqist, Tanaya Barus, Rona Ganta Budiono Budiono Budiyono Budiyono Choirunnisa, Nastiti Dahnilsyah, Dahnilsyah Daliani, Putri Destiana, Ristian Diva Dewi Permata Sari dharma Lindarto, dharma Dianti, Putri Rahma Dipuja, Diah Anugrah Divi Handoko Djati, Sri Sasmita Djati, Sri Sasmito Dorti Faot Dwi Rohman Soleh, Dwi Rohman Eliyani, Fitri Endarwati, Tri Erida, Zulfa Ermina Sari Ernidawati, Ernidawati Evi Suryawati Faisal Haitomi Faizin, T. Faizin Fani, Syahmila Nanda Farhani, Lailatul Farid Farid, Farid Fathan, Muhammad Fashanul Fatihah, Salsabilla Rima Fatimah, Dafina Febiana, Maissy Feriandi, Yoga Ardian Fitra Suzanti Fitri, Ailsa Fitriana, Elza Fitriana, Nimas Nur Fitriyani, Novi Yanti Duwi Gaho, Daratul Aini Giovanni, Giovanni Gontar Alamsyah Siregar Gunarda, Gunarda Guruh, Muhamad Halomoan, Yan Kristian Hariyanti, Mariya Keke Hasan, Dedy Haryadi Hasbullah Hasbullah Herlina, Sara Hery Widijanto I Gusti Bagus Wiksuana Idris Idris Imelda Rey Imma Widyawati Agustin Indah, Erika Irda Sayuti Isa, M Jelita, Aulia Vinda Junaidi, M. Junizar, Herdya Kamaludin, Insan Kamaruzzaman, Suraiya Kusuma, Rinda Tri Lenny Prastiyowati, Lenny Leonardo Basa Dairi Lestari, Aulia Liantoro, Liantoro M, Iqhramullah M, Irfan Mariani Natalina Mariani Natalina L, Mariani Masrul Lubis Mawaddah , Nurul Medyan Riza Mirna Rahmah Lubis Mitri Irianti Moch. Rifai Muhammad Hatta Muhammad Rifai Muhammad Zainul Arifin Mujahidah, Lathifah Mujiastutik, Dhea Putri Muslim*, Abrar Musriyani, Iin Muzasti, Riri A. Nabil Nabil, Nabil Nadia Rahmadhani Naila Fauza Nartini, Nartini Natalia, Dilla Natalina. L, Mariani Nur, Doni Haidar Nursal Nursal, Nursal Pamungkas, Dimas Tri Patmawati, Ike Permata Dewi, Asiska Pertiwi, Hernin Diah Permata Prasetyo, Yohannes Eko Pratama, Aidilla Putri Nanda Pratikso Pratikso Priyandani, Marisa Ayu Priyatna, Priyatna Pujiastutik, Novi Purba, Ernova Viorely Purbayani, Dina Rizky Purwaningsih, Riani Putri Dwi Sundari Putri, Ava Emalia Selviana Putri, Karisma Anisa Rachmat, Mudiyono Rahayu, Khatrina Rintis Lintang Rahmad Setiawan Rahmat, Mudiyono Rahmawati, Alfina Pristya Rasulyanti, Amalia Ratih Setiawati RIFAI, MOH. Riska Habriel Ruslie Rivalino, Ricky Rodi Wahyudi Rofi, Latifa Hammimatu Rosyida, Dina Safera, Della Dwi Safitri, Tania Saiful Saiful Sanusi Sanusi Sardulo Gembong, Sardulo Sari Wulandari Satiti, Ihsani Hanif Setyo Septiyaningrum, Fina Dwi Putri Setiawan Setiawan Shufyani, Fahma Siti Juariah Siti Sarah, Siti Solihin, Dede Solikah, Nurul Islami Sri Wulandari sukri Sukri, sukri Suryani, N Lilis Suryaningputri, Dwi Amartani Susanti, Nurdieni Susanto, Noto Sutoro, Moh. Suwanto Suwanto Suwondo Suwondo Swasti Maharani, Swasti Syachrofi, Muhammad Syaflita, Dina Syahira, Juniva Syatoto, Iman Syavela, Gea T. M. Diansyah Tandana, Ester Triasroza, Alrohma Nikmawati Turrahmah, Laila Tyas, Nazwa Julia Madyaning Utami, Dhiba Putri Setyari Vindi, Yessika Wahyu, Eka Wahyuni, Liya Tri Wan Syafii Weni Puji Hastuti Wibisono, Putri Sindy Yose Rizal Yulianti, Lia Mustika Novita Yusmadi, Y Yusrita, Eli Yustina Yustina Zafrida , Siska Zamzam, Zamzam Zulfah Zulfah Zulfarina, Zulfarina