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All Journal Jurnal Pendidikan Kimia Indonesia Jurnal Penelitian Pendidikan IPA (JPPIPA) Journal of Education Research Jurnal Akademika Kimia
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Pendidikan Kimia FKIP Universitas Tadulako Palu Indonesi 94119
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Students' Perceptions Of The Inorganic Chemistry Classroom Management Through A Web-Based Instructional System Daud Karel Walanda; Mery Napitupulu; Detris Poba
Jurnal Pendidikan Kimia Indonesia Vol. 6 No. 1 (2022)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jpk.v6i1.41404

Abstract

Pengelolaan kelas dalam proses pengajaran khususnya mata pelajaran kimia akan menjadi signifikan agar hasil belajar menjadi optimal. Namun kegitan pembelajaran yang dilaksanakan saat ini kurang optimal sedangkan berdampak pada hasil belajar. Penelitian ini bertujuan untuk menganalisis persepsi mahasiswa dalam manajemen kelas mata kuliah kimia anorganik. Jenis penelitian ini yaitu penelitian kuantitatif. Metode dan instrument yang digunakan untuk mengumpulkan data yaitu instrument. Subjek penelitian ini adalah 40 mahasiswa. Teknik yang digunakan untuk menganalsis data yaitu analisis deskriptif kualitati dan kuantitatif. Hasil penelitian menunjukkan bahwa persepsi mahasiswa tentang GC berada pada kategori memuaskan dan merekomendasikan GC untuk digunakan dalam pelajaran lain. Effect size dihitung dari perbedaan rata-rata pre-test dan post-test sebelum dan sesudah pembelajaran dengan menggunakan rumus Cohen dan diperoleh efektivitas GC menurut kriteria Cohen adalah 1,77, yang berarti bahwa ukuran efek Google Classroom luas; maka GC sangat efektif digunakan dalam mengajar mata kuliah kimia anorganik. Disimpulkan bahwa pengelolaan kelas melalui sistem instruksional berbasis WEB efektif digunakan dalam pembelajaran.
Crude Bromelain Enzyme Activities Based on Maturity Level of Pineapple Detris Poba; Ijirana Ijirana; Jamaludin Sakung
Jurnal Akademika Kimia Vol. 8 No. 4 (2019)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.28 KB) | DOI: 10.22487/j24775185.2019.v8.i4.pp236-241

Abstract

Utilization of pineapple is always focused on consumption for fresh fruit and animal feed. many people do not know the other benefits of pineapple. The presence of protease enzymes in it, increasing its utilization. The enzyme is bromelin, which can be obtained by isolating it from pineapple. For this reason, the aim of this study is to isolate the crude bromelain enzyme based on the maturity level of pineapple and then test its proteolytic activity. Pineapple was blended, then the filtrate was deposited, then centrifuged to obtain crude bromelain which is dried by the drying method and tested for its activity using milk substrate. The results showed that old pineapple is the best level of maturity and the sun is the best drying method with proteolytic activity of 0.053 and 0.056 MCU/mg respectively. Its optimum activity is pH 5.8 and 55 oC.
Application of Cooperative Learning Jigsaw Model to Improve Student's Learning Achievement in Chemistry Learning Sitti Rahmawati; Detris Poba; Magfirah Magfirah; Kusrini Burase
Jurnal Akademika Kimia Vol. 11 No. 1 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (223.708 KB) | DOI: 10.22487/j24775185.2022.v11.i1.pp39-45

Abstract

This study aims to improve student achievement in learning chemistry in class X MIA4 at SMA Negeri 1 Palu by applying the Jigsaw Cooperative Learning Model. The Classroom Action Research (CAR) problem can be formulated as follows: Is the Jigsaw Cooperative Learning Model application able to improve student achievement in learning chemistry in class X MIA4 SMAN 1 Palu? CAR is carried out with the following stages to answer the problem: 1. Planning, 2. Implementation. 3. Observation, and 4. Evaluation and Reflection. The study results can be explained as follows several fundamental aspects of learning were successfully improved by applying the Jigsaw Cooperative Learning Model. Such as student activity in collaboration and in completing worksheets independently, actively asking and answering questions, and making students feel happy and enthusiastic. Likewise, the average evaluation of each cycle showed that the % completeness increased. In cycle one, action one was 73.8%, action two 85.5%, and activity three 92.9% increased in cycle two, the average from three actions to 98.0%. It can be concluded that the application of the Jigsaw Cooperative Learning Model can improve student achievement in class X MIA4 SMA Negeri 1.
Adsorption of Fe(III) Ion in Tablets Fe Supplement by Black Tea Dregs and its Application in Inorganic Chemistry Learning Yuli Nurmayanti; Detris Poba; Meida E. Marpaung
Jurnal Akademika Kimia Vol. 11 No. 3 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i3.pp197-201

Abstract

The study of the adsorption of Fe(III) ion in Fe supplement by black tea dregs has been done. This study aims to investigate: (a) the Adsorption ability of Fe(III) ion in Fe supplement by black tea dregs (b) the Analysis result of Fe(III) amounts in a sample of Fe supplement when using black tea dregs. Several parameters were analyzed, such as; water and ash contents of the adsorbent, the optimum time, and the concentration of ion Fe(III) with tea dregs in a buffer medium (pH 4,8). The analysis of sample solution concentration of Fe(III) in this study using Genesys spectrophotometry at 590 nm. The result showed that the water and ash contents were 3.03 % and 0.9 %, respectively. Small percentages indicate that the adsorbent has met the standard (SNI) 06–3730-1995. The time and concentration optimum adsorption of Fe(III)-tea dregs were 60 minutes and 100 mg/L, respectively. The result of the adsorption ability of Fe(III) ion in Fe supplement by tea dregs was 70.4% with the adsorption concentration of ion Fe(III) were 7.07 mg/L. The research results obtained can be used as teaching materials for inorganic chemistry learning, and as a reference for new materials in the field of coordination chemistry and materials.
Utilization of Hyperdocs in Online Learning Models on Student Learning Outcomes Hasmawati Hasmawati; Daud K. Walanda; Afadil Afadil; Kasmudin Mustapa; Detris Poba
Jurnal Akademika Kimia Vol. 11 No. 4 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i4.pp261-265

Abstract

This study aims to improve student learning outcomes through online learning models by utilizing hyperdocs on buffer solution material in class XI MAN 1 Palu City. This type of research uses a quasi-experiment with a pretest and posttest Group Design. Quantitative descriptive research with mixed methods and sampling by purposive sampling. The sample in this study were students of class XI MIPA 1 as the experimental class and XI MIPA 3 as the control class. The instrument used in this study was a learning achievement test totaling 16 multiple-choice question numbers. The research results were obtained from both classes, namely for the experimental class of 81.14 and the control class of 77.05. Learning outcomes were analyzed by testing the effect size for the experimental class, namely 1.2 (Very Large) and 1.0 (Large) for the control class. Based on the results of the study it can be concluded that the online learning model by utilizing hyperdocs in class XI MAN 1 Palu City students can improve student learning outcomes.
Application of Student Worksheets Based on Hyperdocs in Chemistry Learning on Scientific Creativity Detris Poba; Taslima; Daud K. Walanda; Mery Napitupulu; Sitti Rahmawati
Jurnal Pendidikan Kimia Indonesia Vol. 7 No. 1 (2023)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jpki.v7i1.53328

Abstract

Creativity problems are now considered a crucial ability/skill for the future of education and work. Currently, creativity is seen as urgently needing to be improved in the learning process to achieve better learning quality. This research was a descriptive-qualitative that aims to describe the utilization of Hyperdocs towards scientific creativity of SMA Labschool UNTAD Palu students in chemistry learning on the buffer topics The research subjects consisted of 20 students who were obtained based on a purposive sampling technique. The data collection instrument used hyperdocs-based worksheets which consisted of 14 scientific creativity questions that had been validated by a team of experts. Based on the analysis of percentage data and the category of scientific creativity, the test questions in the first and second sessions showed that the average scores for the aspects of unusual uses, problem finding, product improvement, creative imagination, and problem-solving were in a good category. Furthermore, the science experiment and product design aspects are in the sufficient category. So that it can be said that overall the scientific creativity of SMA Labschool UNTAD Palu class XI MIA 1 is in a good category.
Gamification Learning integrated with Local Wisdom based on Character Education, is There an Effect on Problem Solving Ability? Dewi Satria Ahmar; Magfirah Magfirah; Detris Poba; Muhammad Fath Azzajjad
Jurnal Penelitian Pendidikan IPA Vol 9 No 9 (2023): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i9.4968

Abstract

The aim of this study was to determine the description of students' problem solving skills and the effect of gamification learning on students' problem solving ability. The population in this study consisted of 87 people. the research sample was selected based on purposive sampling technique so that the total sample in this study was 56 students who were divided into 2 classes, namely 28 people in the experimental class and 28 people in the control class. Students' problem solving ability was measured using a problem solving rubric developed by The Association of American Colleges and Universities (2017).  Data analysis used descriptive and inferential data analysis. The results of descriptive data analysis showed that the average value of the experimental class problem solving ability was 80.36 higher than the control class which was 72.86. The results of inferential data analysis with independent sample t-test showed that the significance value of the data was 0.001 (<0.05). Based on the research data, it can be concluded that there is an effect of gamification learning integrated with local wisdom based on character education on students' problem solving ability.
Pembuatan Biochar dari Kulit Terong Belanda (Solanum Betaceum Cav) sebagai Adsorben Ion Pb Arini Ramadani; Daud K. Walanda; Mery Napitupulu; Detris Poba
Journal of Education Research Vol. 7 No. 2 (2026)
Publisher : Perkumpulan Pengelola Jurnal PAUD Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37985/jer.v7i2.3656

Abstract

Pencemaran logam berat seperti timbal (Pb) dalam perairan dapat menimbulkan dampak serius terhadap lingkungan dan kesehatan manusia. Salah satu metode yang efektif untuk mengurangi pencemaran logam berat adalah adsorpsi menggunakan biochar berbasis biomassa limbah organik. Kulit terong belanda Solanum betaceum berpotensi dimanfaatkan sebagai bahan baku biochar karena mengandung selulosa, hemiselulosa, dan lignin. Penelitian ini bertujuan untuk menganalisis kemampuan adsorpsi biochar kulit terong belanda terhadap ion Pb serta mengoptimasi kondisi adsorpsi menggunakan metode Taguchi L9. Biochar dibuat melalui proses pirolisis pada suhu 350°C, 400°C, dan 450°C, kemudian dikarakterisasi melalui analisis kadar air, kadar abu, bilangan iodin, dan morfologi permukaan menggunakan SEM-EDS. Proses adsorpsi dilakukan dengan variasi pH, waktu kontak, dan konsentrasi Pb. Hasil penelitian menunjukkan bahwa biochar memiliki kadar air dan kadar abu yang memenuhi standar SNI, dengan nilai bilangan iodin sebesar 761,4 mg/g yang menunjukkan kemampuan adsorpsi yang baik. Kondisi optimum adsorpsi diperoleh pada pH 4, waktu kontak 120 menit, dan konsentrasi Pb 100 ppm dengan konsentrasi Pb akhir <0,03 ppm. Biochar kulit terong belanda terbukti efektif menurunkan konsentrasi Pb hingga di bawah baku mutu air sehingga berpotensi diaplikasikan sebagai adsorben yang ekonomis, ramah lingkungan, dan berkelanjutan dalam pengolahan limbah logam berat.
Analisis Tingkat Literasi Kimia Nominal Siswa pada Materi Asam Basa di Sma Negeri 5 Palu Reski Amelia; Magfirah Magfirah; Ijirana Ijirana; Detris Poba
Journal of Education Research Vol. 7 No. 2 (2026)
Publisher : Perkumpulan Pengelola Jurnal PAUD Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan untuk menganalisis tingkat literasi kimia nominal siswa kelas XII MIPA SMA Negeri 5 Palu pada materi asam–basa. Literasi kimia nominal merupakan kemampuan dasar siswa dalam mengenali istilah, simbol, dan konsep kimia sederhana yang menjadi fondasi bagi pengembangan literasi kimia pada tingkat yang lebih tinggi. Penelitian ini menggunakan pendekatan deskriptif kuantitatif dengan desain survei. Subjek penelitian terdiri atas 271 siswa kelas XII MIPA SMA Negeri 5 Palu tahun ajaran 2025/2026 yang dipilih menggunakan teknik total sampling. Instrumen penelitian berupa tes literasi kimia nominal berbentuk pilihan ganda sebanyak 20 butir soal yang mencakup lima topik, yaitu teori asam–basa, identifikasi asam–basa, pH dan indikator, reaksi kimia asam–basa, serta sifat khusus larutan dan air. Data dianalisis secara deskriptif menggunakan persentase dan kategori tingkat literasi. Hasil penelitian menunjukkan bahwa tingkat literasi kimia nominal siswa masih tergolong rendah, dengan 57,2% siswa berada pada kategori rendah hingga sangat rendah. Topik teori asam–basa memperoleh rata-rata persentase terendah sebesar 39,03% dengan kategori sangat rendah, sedangkan topik sifat khusus larutan dan air memperoleh hasil tertinggi sebesar 59,07% dengan kategori rendah. Hasil penelitian menunjukkan bahwa siswa masih mengalami kesulitan dalam memahami konsep dasar asam–basa secara konseptual dan cenderung mengandalkan hafalan. Oleh karena itu, diperlukan pembelajaran yang lebih kontekstual dan berbasis literasi untuk meningkatkan pemahaman konsep kimia siswa.
Co-Authors Afadil Arini Ramadani Azzajjad, Muhammad Fath Daud Karel Walanda Dewi Satria Ahmar Hasmawati Hasmawati Ijirana Jamaludin M Sakung Kasmudin Mustapa Kusrini Burase Magfirah Magfirah Meida E. Marpaung Mery Napitupulu Reski Amelia Sitti Rahmawati Taslima Yuli Nurmayanti