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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Pendidikan Kimia Indonesia Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Jurnal Pendidikan Matematika dan IPA Pharmaciana: Jurnal Kefarmasian Jurnal Inovasi Pendidikan Kimia Biology, Medicine, & Natural Product Chemistry EduChemia: Jurnal Kimia dan Pendidikan QUANTUM: Jurnal Inovasi Pendidikan Sains Jurnal Kimia Riset Jurnal Pendidikan Dasar Jurnal Penelitian Pendidikan IPA (JPPIPA) ALCHEMY Jurnal Penelitian Kimia EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Indonesian Journal of Pure and Applied Chemistry PENDIPA Journal of Science Education SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Cetta: Jurnal Ilmu Pendidikan JURNAL EKSAKTA PENDIDIKAN (JEP) JURNAL EDUCATION AND DEVELOPMENT Martabe : Jurnal Pengabdian Kepada Masyarakat Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia AR-RAZI Jurnal Ilmiah Jurnal Basicedu EDUKATIF : JURNAL ILMU PENDIDIKAN Jurnal Ilmiah Pendidikan Citra Bakti Jurnal Abdi Insani Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Jurnal Scientia Jurnal Pendidikan Dasar Perkhasa Jurnal Pengabdian kepada Masyarakat Nusantara IJPD (International Journal Of Public Devotion) Hydrogen: Jurnal Kependidikan Kimia CHEDS: Journal of Chemistry, Education, and Science Pharmaceutical Sciences and Research (PSR) Jurnal Basicedu J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) Jurnal Natural Jurnal Pengabdian Pada Masyarakat EduChem JIPI (Jurnal IPA dan Pembelajaran IPA) Jurnal Tumbuhan Obat Indonesia Journal of The Indonesian Society of Integrated Chemistry Jurnal Sains dan Kesehatan Jurnal Ilmiah Pendidikan Citra Bakti
Rini Muharini
PS Pendidikan Kimia Jurusan PMIPA FKIP Universitas Tanjungpura
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UPAYA MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR SISWA MELALUI MODEL PEMBELAJARAN TAI MATERI LAJU REAKSI Rossesa, Rossesa; Muharini, Rini; Hadi, Lukman
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 7, No 7 (2018): Juli 2018
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

Abstract: The main goal of this study was to improve student’s activity and achievement of reaction rate Team Assisted Individualization (TAI) learning model. A two cycles of classroom action research was conducted. A total of 30 science class students of SMAN 1 Jawai participated in this study. Achievement test, observation sheet, and interview guidelines were used to collect data. Data were analyzed qualitatively and quantitatively. Students would be identified to have improvement  on visual, and verbal activity and achievement when they obtained score of 75, 25 and 60 respectively. The result showed that students have pass grade point do to the improvements they made. Those improvements were improve on visual activity from 56,6% to 76,6%, verbal activity from 10% to 26,6% and achievement from 23,3% to 83,3% respectively.  Those result indicated that the cooperative learning model type TAI give an positive effect toward student learning activity and achievetment.Keywords: Team Assisted Individualization (TAI), reaction rate, activity and learning outcomes.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE TEAMS GAME TOURNAMENT (TGT) BERBANTUAN MEDIA MOLYMOD PADA MATERI HIDROKARBON KELAS X SMA NEGERI 4 SINGKAWANG Pratiwi, Dewi; Muharini, Rini
Jurnal Pendidikan Matematika dan IPA Vol 1, No 2 (2010): Vol. 1 No.2 Juli 2010
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (307.109 KB) | DOI: 10.26418/jpmipa.v1i2.200

Abstract

The aim of this research is to know the effect of cooperative learning model, Teams Game Tournament (TGT) type, toward students achievement on hydrocarbon material, class X SMA Negeri 4 Singkawang. A quasi experimental method using pre-posttest control group design was implemented in this research. Data collecting tool used is essay test which has realibility of 0,59. Intact group random sampling technique was taken to get XA and XB classes as samples. Based on their daily chemistry examination, class XA was picked up as control class and XB was experiment class. U Mann Whitney test on students pretest showed no significantly difference between control and experiment class (Zhitung = -1,15, Ztabel = 1,96, ?=5%). Meanwhile, U Mann Whitney test on students posttest indicated significant difference between experiment and control class (Zhitung = -2,54, Ztabel = 1,96, ?=5%). The calculation of effect size resulted on posttest was 0,64 (23,89%). It showed that cooperative learning model TGT type gives intermediate level of effect size toward students achievement.Keywords: students achivements, cooperatif learning, Teams Game Tournament model, Hydrocarbons
PEMANFAATAN TUMBUHAN SEBAGAI ZAT ADITIF MAKANAN OLEH MASYARAKAT DESA RASAU JAYA UMUM KABUPATEN KUBU RAYA KALIMANTAN BARAT Andriyani, Putri; Masriani, Masriani; Muharini, Rini
Jurnal Pendidikan Matematika dan IPA Vol 10, No 1 (2019): Januari 2019
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (905.813 KB) | DOI: 10.26418/jpmipa.v10i1.29752

Abstract

AbstractThe people in Rasau Jaya Umum village Kubu Raya regency have used plants as ingredient food that has been inherited from generation to generation for daily cooking or to make the typical food. The typical food in Rasau Jaya Umum village like Rengginang, crackers, and salted fish. The purpose of research to collect data of plants used as food additives by people in Rasau Jaya Umum village. The respondents were chosen through snowball sampling technique and then given a series of questions using observation sheet. The head in Rasau Jaya Umum village is chosen as the main respondent then proceeded to the traders and home industry owners who produce the typical food. The results showed that there are 18 species of 15 plant families used as natural additives, namely Liliaceae, Zingiberaceae, Amaranthaceae, Oxalidaceae, Rutaceae, Arecaceae, Poaceae, Gnetaceae, Malvaceae, Cactaceae, Pandanaceae, Piperaceae, Polygonaceae, Anacardiaceae, and Myrtaceae.Keywords: plants, food additives, Rasau Jaya Umum village
PENGARUH PEMBELAJARAN STAD BERBANTUAN BOOKLET ACCORDION MATERI SPU KELAS X SMA NEGERI 2 SINGKAWANG Patia, Patia; Hairida, Hairida; Muharini, Rini
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 7, No 5 (2018): Mei 2018
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

AbstractThe aims of this research is to know the difference of learning outcomes between learning process using cooperative model STAD type, assisted Booklet Accordion and using conventional model. This research used Quasi Experimental Design with Nonequivalent Control Group Design. The sampling technique used simple random sampling technique, where class X MIA 1 with 27 students as experiment class and class X MIA 3 with 30 students as control class. U Mann Whitney test was conducted to analys gain score data. The analysis result gave Asymp.sig (2-tailed) value 0.000 (sig <0,05), indicating that there were differences in learning outcomes between students who are given cooperative learning model STAD type assisted media booklet accordion and conventional methods. The effect size calculation showed that cooperative learning model STAD type assisted media booklet accordion gave influence toward learning outcomes  class X MIA SMA Negeri 2 Singkawang on periodical system of element  with 1,03 high category. Keywords: Cooperative, Student’s Achievements, Booklet Accordion
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK BERBASIS PROJECT BASED LEARNING PADA MATERI PEMISAHAN CAMPURAN Apriliantika, Apriliantika; Muharini, Rini; Melati, Husna Amalya
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 8, No 11 (2019): Nopember 2019
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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AbstractThis research aimed to produce LKPD project based learning that was feasible to use and to measure the response of teachers and students to the products developed. The research used was R&D referring to the Kemp model. The sampling technique used was purposive sampling. The initial development trial subjects consisted of 15 people, the main trial consisted of 30 people and the trial of the use of the product consisted of 13 students of grade VII in SMPN 12 Pontianak and 3 natural science teachers. Data collection tools used were the feasibility assessment sheet and the questionnaire responses of teachers and students. The results of the feasibility assessment conducted by experts gave a very decent level of eligibility, namely the content, presentation, language, and graphic viability with percentages respectively 87.3%, 84.1%, 95.3%, and 96.6 %. The product trial results showed the students' response with an average score of 88.03% and the teacher's response with an average score of 98.3%, which classified as a high category. The effectiveness of LKPD can be seen from the results of the students' skills in making filtration equipment which was 87.8 and distillation equipment which was 84.8 with high criteria. Keywords: Mixed Separation, Project Based Learning, Worksheet  
PENGARUH TAI BERBANTUAN KARTU POP UP KR-CHART TERHADAP HASIL BELAJAR SISWA SMAN 2 SINGKAWANG Puspita, Vivi Anugrah; Muharini, Rini; Hadi, Lukman
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 7, No 11 (2018): Nopember 2018
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

AbstractThe aims of this study were to determine the difference of students learning  achievement taught using TAI type with pop up KR-chart card media which taught using conventional learning, and to determine its effect toward  student learning achievement for the eleventh grade MIA students in SMA Negeri 2 Singkawang. This study used quasi experimental design. According to simple random sampling technique, two classes of eleventh grade MIA students in SMA Negeri 2 Singkawang, were selected as sample they were XI MIA 1 as experiment and XI MIA 2 as control class. The instrumens of collecting data in this research were learning achievement tests, observation sheets, and interview guidelines. The final test results data were analyzed using Whitney U-mann test which obtained the Sig. (2-Tailed) value of 0.001 < 0.05. The analysis results showed that there were differences in learning achievement between students taught using TAI type with pop-up KR-chart cards media and students taught using conventional models. Learning TAI with pop-up KR-chart card media on solubility and solubility product material had an effect of 32.89% on student learning achievement with an Effect Size value of 0.91 in which categorized high. Keywords:  Learning  Achievement, Pop Up Key-Relation Chart, Solubility and Solubility Product, Team Assisted Individualization
PENGEMBANGAN INSTRUMEN PENILAIAN HIGHER ORDER THINKING SKILLS (HOTS) PADA MATERI ZAT ADITIF Saleha, Tsaniya Rahma; Muharini, Rini; Hadi, Lukman
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 9, No 1 (2020): Januari 2020
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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AbstractThe aims of this research were to know how the feasibility and how teachers’s response on the Higher Order Thinking Skills (HOTS) assessment instrument on the aditif substance material. The form of this research was  research and development (R&D) with Borg and Gall developing model which had been simplified by Puslitjaknov team into 5 main phases. HOTS assessment instrument being developed consisted of HOTS  grids sheets problem in the form of essay, and HOTS scoring guidances (features) instrument. The  validated HOTS assessment instrument was tried out to the science teachers at SMPN 10 Pontianak, SMPN 12 Pontianak, and SMPN 16 Pontianak.The result of feasibility of HOTS assessment instrument was 93.72 %  which has high feasibility in the criterion so it was categorized very feasible used in the teaching learning process. The result of the teachers’s response questionnaring on the HOTS assessment instrument was 97.02 % which was very high in the criterion so it showed that teachers’s response on the HOTS assessment instrument was very good. Keywords:  Assessment Instrument, Higher Order Thinking Skills (HOTS), Aditif Substance
Pengembangan Novel Grafik Elektronik pada Materi Reaksi Radikal Bebas sebagai Media Suplemen Pembelajaran Sabianto, Fransiskus; Melati, Husna Amalya; Muharini, Rini
Jurnal Inovasi Pendidikan Kimia Vol 16, No 1 (2022): January 2022
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jipk.v16i1.30529

Abstract

This research was aimed to produce a valid electronic graphic novel on free radical reaction subject and to find out the student’s response to the developed product. This research employed Research Development (RD) method by using Thiagarajan’s 4D model with modification, in which applied only three of four steps in 4D model.  The developed product was validated by experts. The responses toward developed product were collected from the students of Chemistry Education FKIP Untan who have taken organic chemistry course.  Data collection tools used were validation sheets and student’s response questionnaires on the developed product.  The validation’s result from the experts showed that the developed product was very proper in terms of content, presentation, linguistic, and graphic aspects with consecutive total scores of 94.0%, 95.0%, 89.0%, and 100,00% respectively. The results of the student’s responses in small group trials and in large group trials were of 82.5% with high category and of 83.2% with very high category, respectively.  Thus, this electronic graphic novel on radical reaction has very good potential as a learning media to attract students to learn free radical reaction and its application in daily life.
Pengaruh Penyediaan Bacaan Berbentuk Refutation Text untuk Meremediasi Miskonsepsi Siswa Tentang Konsep Asam Basa di Kelas XI IPA SMA Negeri 4 Pontianak Firman Shantya Budi; Hairida Hairida; Rini Muharini
Jurnal Pendidikan Matematika dan Sains Vol 2, No 2 (2014): December 2014
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.809 KB) | DOI: 10.21831/jpms.v4i2.7166

Abstract

Penelitian ini bertujuan untuk mengetahui efektifitas remediasi menggunakan bacaan berbentuk refutation text untuk mereduksi miskonsepsi siswa tentang konsep asam basa di kelas XI IPA SMA Negeri 4 Pontianak tahun ajaran 2010/2011. Bentuk penelitian yang digunakan adalah eksperimen semu (Pre-Eksperimental Design) dengan rancangan One-Group Pre-Test Post-test. Data diambil dari seluruh siswa kelas XI IPA yang berjumlah 114 siswa dengan teknik sampling jenuh. Tes yang digunakan dalam penelitian ini adalah tes diagnostik berupa pilihan ganda dengan tiga alternatif jawaban dan tiga alternatif alasan yang terdiri atas 10 butir soal. Berdasarkan analisis data, terjadi penurunan rata-rata persentase miskonsepsi siswa untuk ketiga kelas yaitu 31,7% (XI IPA1), 43,7% (XI IPA2), dan 35,9% (XI IPA3). Rata-rata penurunan persentase miskonsepsi siswa tersebut tersebar pada 10 konsep. Perubahan konseptual dianalisis dengan menggunakan uji statistik Mc Nemar (db=1, α=5%) dan uji Binomial (α=1%). Terdapat penurunan miskonsepsi siswa secara signifikan sebanyak 5 konsep (XI IPA1) dan 7 konsep (XI IPA2 dan XI IPA3) setelah remediasi. Nilai effect size diperoleh sebesar 2,03 (XI IPA1), 4,74 (XI IPA2), dan 3,17 (XI IPA3) sehingga remediasi memberikan kontribusi peningkatan hasil belajar siswa sebesar 47,88% (XI IPA1), 50% (XI IPA2), dan 49,92% (XI IPA3). Remediasi miskonsepsi siswa menggunakan bacaan berbentuk refutation text, efektif untuk mereduksi miskonsepsi siswa pada konsep asam basa.Kata kunci: efektifitas, remediasi, miskonsepsi, refutation text, konsep asam basa
Antioxidant-phenolic content correlation of phenolics rich fractions from Dillenia suffruticosa wood bark Rini Muharini; Ira Lestari; Masriani Masriani
Pharmaciana Vol 11, No 2 (2021): Pharmaciana
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (408.805 KB) | DOI: 10.12928/pharmaciana.v11i2.20674

Abstract

Dillenia suffruticosa is one of the tropical medicinal plants that has been used traditionally for treating several tropical diseases. However, phytochemical and pharmacological investigations of D. suffruticosa wood bark have not been well-investigated. This research aimed to investigate the correlation between antioxidant properties and total phenolic content of phenolics rich extract and fractions from D. suffruticosa wood bark. The phytochemical investigation revealed the existence of phenolics and alkaloids in methanolic crude wood bark extract and all fractions. Meanwhile, the presence of flavonoids was shown in chloroform and methanol fractions. The highest total phenolic content was demonstrated by methanol fraction with 254.34 ± 16.86 mg GAE/g extract. Meanwhile, the highest total flavonoid content was interestingly displayed in chloroform fraction with 15.33 ± 0.26 mg RE/g extract. The crude extract and methanol fraction had a profound antioxidant activity with IC50 values of less than 15.63 ppm and 8.83 ppm, respectively. A strong correlation was shown between the antioxidant activity and total phenolic contents through correlation analysis. Thus, the D. suffruticosa wood bark could be considered a potential natural source of antioxidants.
Co-Authors A Ifriani Harun AA Sudharmawan, AA Abdul Hafiz, Iqbal Ade Kurnia Ade Mirza Adriana Martania Agung Hartoyo Agusta, Muhammad Farras Leonasa Agustinus Ridwan Ahmad Yani T Akrom, Akrom Andi Hairil Alimuddin Andi I. Harun Andi Ifriany Andriyani, Putri Anggi Fatmadiwi Angraini, Mega Restu Aninda, Dea Antonius Ola Apriliantika, Apriliantika Arit Arit Arniezca, Elginda Yusa Asriah Nurdini M. Asrori Asrori Assari, Andra Meisantry Aunurrahman Aunurrahman Ayni, Ayni Bella Agustina Bilqis, Adilla Cahyani, Gustin Cahyani, Melur Regista Candra Candra Claudina Marditha Dea Aninda Dedi Irawan Depasthika, Sistha Citra Desy Ramadhani Putri Dewi Pratiwi Dinda Kartika Wijayanti Dzul Fadly Eka Kartina Eka Sofia Elisa, Claudia Eva Eni Mayasari Eny Enawati Eny Enawati Eny Enawati Eny Enawaty Eny Enawaty ERLINA Erlina Erlina Erlina Ersando Ersando Ersando Ersando Fadly, Dzul Fania, Ririn Putri Faridy, Fadhil Alwa Fatin Khairunnisa Fatmadiwi, Anggi Fatmala, Fatmala Febriani, Melda Fia Tiaraseta Firman Shantya Budi Fitri, Rosiana Fitriani Fitriani Gerina, Febrilia Hafiz, Muhammad Iqbal Abdul Hairida Hairida Hamdil Mukhlishin Henny Herawaty Hidayati, Putri Risti Husna Amalya Melati Husna Amalya Melati Husna Amalya Melati Ifriani, Andi Ifriany, A. Ifriany, Andi Ifriany, Andy Iqbal Abdul Hafiz Ira Lestari Ira Lestari Ira Lestari Irene Yudea Listra Irmalia, Andari Meriam Isa Isa Isa Isa istiqomah istiqomah Istiqomah Istiqomah Istiqomah, Fatiyatul Laili Fitri Yeni Lestari*, Ira Lukman Hadi Lukman Hadi Lukman Hadi Lukman Hadi, Lukman Maharani Nukila Maharani Nukila Mahendra, M. Rezha Mardasela, Tery Margareta Lita Widiansari Maria Ulfa Maria Ulfah Maria Ulfah Marisa Marisa Maryani Maryani Maryani Maryani Masriani . Masriani Masriani Maulidiyah, Hanna Rohmatul MELANIA, PURNAMA Melur Regista Cahyani Meri Meri Miranti, Maya Monica, Icha Monica, Qois Monika, Putri Dharma Muhammad Arifin Muhammad Asrori Muhammad Asrori Muhammad Farras Leonasa Agusta Nelly Dayanti Noprianti, Dini Novi Dwi Trisnawati Nur Hijriyati Nurhalimah, Risna Nurpaisah, Nurpaisah Nurul Hikmah Pasaribu, Revi Lestari Patia, Patia Peter Proksch Pingkan Ramadhan Sailendra Pranata, Rio Pratami, Hutianas Muhar Pratiwi, Divya Indah Pundentiana Stella Padari Purnama Melanie Puspita, Vivi Anugrah Rachamat Sahputra Rachmat Sahputra Rachmat Sahputra Rachmat Sahputra Rahma, Saparina Rahmad Ulwan Rahmat Rasmawan Ramadhan Sailendra, Pingkan Ramadhanti, Nuzul Alya Risya Sasri Riyanto, Izory Roman Rody Putra Sartika Rossesa, Rossesa RR. Ella Evrita Hestiandari Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah, Rusnani Rusnani Sabianto, Fransiskus Sahputra, Rahmat Saleha, Tsaniya Rahma Sasri, Risya Seilendra, Pingkan Ramadhan Selina, Selina Siahaan, Gorga Josua Chrisvandoli Silpia Vilda Saputri suci dessia Sulistyarini, Sulistyarini surono, wahid Syamswisna , theresia, monica Tiara, Tiara Tomo Djudin Tulus Djunanto Tulus Junanto Tulus Junanto Ubadilla Mairani Ulwan, Rahmad Ursula Lisfatkandayant Utami, Nurzam Indah Verya Adithya Vita Oktavianty Wahyuni, Neri Wandi Wandi Warohmah, Mawaddatul Warsidah Warsidah Warsidah Warsidah Warsidah, Warsidah Widiana Uluk Naikofi WOLLY CANDRAMILA Yeni Meilani Yeni Triana Yopita Ita Yuliarita, Yuliarita Yuni Wanda Lestari Zakaria, Andi