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All Journal Jurnal Pendidikan Kimia Indonesia Jurnal Matematika & Sains Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia Indonesian Journal of Chemistry JMM (Jurnal Masyarakat Mandiri) Jurnal Ilmiah Kanderang Tingang Journal of Educational Chemistry (JEC) Patria : Jurnal Pengabdian Kepada Masyarakat Jurnal Riset Pendidikan MIPA Jurnal Abdimas Ilmiah Citra Bakti (JAICB) Mattawang: Jurnal Pengabdian Masyarakat JSEP (Journal of Science Education and Practice) Jurnal Akademika Kimia Jurnal Ilmu Pendidikan Indonesia JIPI (Jurnal IPA dan Pembelajaran IPA) Mitra Sains Jurnal Akademika Kimia

Daud Karel Walanda

Pendidikan Kimia FKIP Universitas Tadulako Palu Indonesi 94119

Author-ID : 411675

Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Effectiveness of Google Classroom in Chemistry Learning on Stoichiometry Topic Viewed from Students’ Learning Motivation Emi Sulmeni; Daud K. Walanda
Jurnal Akademika Kimia Vol. 9 No. 4 (2020)
Publisher : Universitas Tadulako

This study aimed to determine the effectiveness of using google classroom in chemistry learning in terms of student learning motivation in MAN 2 Parigi, Sulawesi Tengah Indonesia. The sample in this study was students in class X MIA 2 (n = 23). The data analysis technique was the effect size d Cohen test, the value was 0.86 which had a very large effect category. This influence can be seen from students' learning motivation which increased with an average score of 3.70 which had a very good category. Based on these data it can be concluded that Google classroom affected the students’ learning results and learning motivation.

Application of Clove Leaf Oil (Syzygium aromaticum L.) on Preservation of Milkfish (Chanos chanos) Rukmawati Rukmawati; Daud K. Walanda; Irwan Said
Jurnal Akademika Kimia Vol. 10 No. 4 (2021)
Publisher : Universitas Tadulako

Clove leaf oil (Syzygium aromaticum L.) is obtained from distilling clove leaves. This study aimed to examine the effect of clove leaf oil on the preservation of milkfish meat. Clove leaf oil was obtained by steam distillation and purified by a simple distillation method. The number of microbes was determined using the total plate count (TPC) method, while the organoleptic test used a level of preference for color, smell, texture, and taste. The results showed that the pH and the number of fish meat bacteria at a concentration of 8%, when left for one day, were 6.61 and 2.46 × 10-7 CFU/mL, while the three days was 7.2 and 2.98 × 10-7 CFU/mL, a concentration of 10% in 1 day which was 6.64 and 2.03×10-7 CFU/mL while the three days was 7.25 and 2.54 × 10-7 CFU/mL and a concentration of 12 % in 1 day was 6.67 and 1.83 × 10-7 CFU/mL while three days was 7.57 and 2.07 × 10-7 CFU/mL, besides that from organoleptic test data the panelist preference rate was more significant in the concentration of 12 % then the concentration of 10 and 8 %, respectively. The results showed that at a concentration of 12%, it was a good concentration to be used as preservation compared to a concentration of 10 % and a concentration of 8%, both for a 1-day and a 3-days. This shows that the higher the concentration of clove leaf oil, the greater the ability to preserve fish meat.

Determination of Vitamin C and Metal Copper (Cu) Levels in Katokkon Chili (Capsicum chinense Jacq) Based on Maturity Level Novianti Patiung; Daud K. Walanda; Sitti Aminah
Jurnal Akademika Kimia Vol. 10 No. 3 (2021)
Publisher : Universitas Tadulako

Katokkon chili is one type of chili grown mainly in the Tana Toraja district, and the people use this plant as a typical spice with variations colors from green, orange, and red. It is assumed that the plant is rich in vitamins and minerals. This study aims to determine the levels of vitamin C and copper metals in katokkon chili based on their level of maturity. Vitamin C and copper levels were determined by spectrophotometry. The results showed that the highest level of vitamin C was 23.52 and 5.12 mg/kg in both wet and dry orange chilies, while the highest copper level was found in green chili was 12.25 mg/kg

PERSEPSI PESERTA DIDIK TERHADAP PENERAPAN LMS SCHOOLOGY DALAM PEMBELAJARAN IPA SRI HASTUTI VIRGIANTI PULUKADANG; MERY NAPITUPULU; DAUD K WALANDA; AFADIL AFADIL
Jurnal Ilmu Pendidikan Indonesia Vol 8, No 3 (2020)
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

The development of science and science and technology is always followed by the development of teachers and students in the field of education. Science and technology has a great influence on life and the environment. Students' understanding of science and its ability to apply it in life. Through this principle, students not only learn to listen to the teacher's explanation, but students can find out the real way of learning. The integration of technology, in this case the Schoology learning management system (LMS), is expected to help students understand science. This study aims to determine students' perceptions of the application of LMS Schoology in the seventh grade students of SMP Gamaliel Palu. The results of quantitative descriptive analysis showed that students gave a positive response to the progress of science by using Schoology.

The Applicaton of Flipped Classroom Learning Model of High School Students on Electrolyte and Non-Electrolyte Solutions Yeyet Sri Rahmi; Daud Karel Walanda
JSEP (Journal of Science Education and Practice) Vol 6, No 1 (2022): June 2022
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jsep.v6i1.5705

The purpose of this study was to determine the differences in the application of the Flipped Classroom learning model and the conventional learning model to student learning outcomes to class X SMA Negeri 1 Paleleh on electrolyte and non-electrolyte solutions. This research was a quasi-experimental research design whiten non-randomized pretest posttest control group design. The population of this study were all students of class X SMA Negeri 1 Paleleh. The sampling technique is random sampling. The sample of this research is class X IPS 3 as the experimental class as many as 27 students and class X MIPA 1 as the control class as many as 26 students. The learning outcomes obtained by the average value of the experimental class are 70.19 and the control class is 64.81. Testing the data from the first research, namely the test using the effect size by Cohen's d, it was found that in the experimental class the Flipped Classroom learning model applied to affect student learning outcomes greater than 97.7% or the effect was very large, while in the control class the conventional learning model applied to affect the results. Student learning as much as 94.5% or a big effect. The second uses a two-party t-test statistical analysis with prerequisite tests, normality tests, and homogeneity. The results of hypothesis testing are obtained – ttable tcalculation + ttable, was -2007 2.9069 +2.007 with a significant level (α = 0.05) and degrees of freedom = 51.

The Extraction of Nickel from Morowali Laterite Ore with Nitric Acid I W. A. Wirawan; Daud K. Walanda; Mery Napitupulu
Jurnal Akademika Kimia Vol. 11 No. 2 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i2.pp91-95

Nickel extraction from Morowali laterite ore has been carried out with nitric acid as the solvent. This study aims to determine the effect of nitric acid concentration, temperature, and stirring time on nickel content in laterite ore originating from Morowali. Morowali laterite seeds were extracted using the leaching method using nitric acid as the solvent with various concentrations of 0.5, 1, and 2, temperatures of 30, 60, and 95, and stirring times of 3, 6, and 12. Taguchi analysis was used in this study to obtain the effect of the three parameters used. The results showed that the optimum conditions were obtained at a concentration of 2 molars nitric acid, a temperature of 95°C, and a stirring time of 12 hours, with a nickel content of 16.469 ppm and a nickel recovery percent of 3.88%.

Extraction of Nickel from Morowali Laterite Ore with Hydrochloric Acid (HCl) I Komang Jati Purnawan; Daud K. Walanda; Mery Napitupulu
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.pp134-139

This study aims to determine the influence of temperature, leaching time, and the influence of hydrochloric acid concentration in the nickel extraction process, as well as to determine the optimum conditions of the laterite nickel extraction process using the Taguchi method which is influenced by hydrochloric acid concentration, temperature and leaching time. The laterite samples used came from the Bahodopi District, Morowali Regency, Central Sulawesi Province. Quantitative analysis using AAS (Atomic Absorption Spectrophotometer) with variables studied including acid concentrations of 0.5 M, 1 M, and 2 M, temperatures with levels of 30oC, 60oC, and 95oC, and leaching times of 3 hours, 6 hours, and 12 hours. The optimum conditions obtained from the results of the study were at a temperature of 95oC, a leaching time of 12 hours and a concentration of 2 M with the optimum absorbance obtained, namely 0.1635, the optimum concentration of 5.9693 mg /L with a percent of nickel recovery obtained of 1.41%.

PENGUATAN BUDAYA LITERASI EKOLOGIS DI SEKOLAH Nurasyah Dewi Napitupulu; Daud Karel Walanda; Mery Napitupulu; Ryka Marina Walanda
JMM (Jurnal Masyarakat Mandiri) Vol 6, No 6 (2022): Desember
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v6i6.10169

Abstrak: Tingkat literasi peserta didik di Indonesia masih berada pada kategori rendah. Pengabdian kepada masyarakat (PKM) dilakukan untuk menguatkan budaya literasi ekologis peserta didik di Sekolah Bala Keselamatan Palu terhadap 56 orang peserta didik baru. Penyuluhan dilakukan melalui ceramah, tanya jawab, dan simulasi menggunakan presentasi dan video tentang isu-isu fenomena ekologis dengan tujuan: (1) Membangun budaya literasi ekologis; dan (2) Membangun perilaku go green school. Hasil evaluasi melalui tanya jawab sepanjang penyuluhan menunjukkan rata-rata persentase “Membangun budaya Literasi Ekologis” sebesar 60,4% dan “Membangun perilaku dan go green school activity” sebesar 84,9%. Hasil evaluasi melalui observasi dan wawancara seminggu setelah penyuluhan menunjukkan adanya kreativitas kelompok “Sasisapo” melakukan proyek “perubahan iklim global” dengan merawat tanaman setiap hari seusai sekolah, menanam tanaman (bunga-bunga dan dua pohon akasia), dan bersih-bersih lingkungan sekolah setiap hari Sabtu. Diharapkan hasil PKM ini menjadi masukan terhadap guruguru dalam menginternalisasi nilai-nilai budaya literasi ekologis pada pembelajaran di kelas.Abstract: The literacy level of students in Indonesia is still in the low category. Community service (PKM) is carried out to strengthen the ecological literacy culture of students at the Palu Salvation Army School for 56 new students. Counseling is carried out through lectures, questions and answers, and simulations using presentations and videos on issues of ecological phenomena with the aim of: (1) Building a culture of ecological literacy; and (2) Building go green school behavior. The results of the evaluation through questions and answers during the extension showed that the average percentage of "Building an Ecological Literacy culture" was 60.4% and "Building behavior and going green school activity" was 84.9%. The results of the evaluation through observations and interviews a week after the extension showed the creativity of the "Saisapo" group in carrying out a "global climate change" project by taking care of plants every day after school, planting plants (flowers and two acacia trees), and cleaning the school environment every day. Saturday. It is hoped that the results of this PKM will become input for teachers in internalizing the cultural values of ecological literacy in classroom learning.

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

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

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.

Co-Authors AA Sudharmawan, AA Afadil Alep, Boni Alizah, Nur Almahdali, Khafifah Amalia, Maryam Anang Wahid M.Diah Arwansyah Arwansyah Baharuddin Hamzah Baloga, Hendra Bau Ratu Berlin, I Dewa Gede Darsikin Darsikin Delviana Melego Detris Poba Dewi, Eka Dewi, Evie Kurnia Maya Dewijayanti, Putu W. Djahir, Ahmad Rifaldi Djulia Onggo Ellak I. von Nagy-Felsobuki Emi Sulmeni Finta Amalinda Fitriani Fitriani Fitriani, Eva Geoffrey A. Lawrance Griffiths, Zoe Hasmawati Hasmawati I Ketut Suada I Komang Jati Purnawan I Komang Werdhiana I W. A. Wirawan Irwan Irwan Irwan Said Ismail Ismail Kasmudin Mustapa Kusuma, I Gede Yoga Nata Leonardo Leonardo Marungkil Pasaribu Mery Napitupulu Miryam B. Kalase Mohammad Jamhari Muhammad Agus Muljanto Mustakim, Sartika Nakazawa, Koyomi Napitupulu*, Mery Napitupulu, Nurasyah D Ni Luh Cicik Fitriani Novianti Patiung Nur A. O. Buhang Nurasyah Dewi Napitupulu Nurdin Rahman Nurhikma, Nurhikma Poba, Detris Podala, Katherina Pongenda, Rudy Christiyanto Purnama Ningsih Rahma, Sri Ratman Ratman Rimah Juwita Robert C. Burns Rukmawati Rukmawati Ryka Marina Walanda Setiawan, I Ketut Ardi Siang Tandi Gonggo Siang Tandi Gonggo Siti Nuryanti Sitti Aminah Sitti Rahmawati Solfarina, Solfarina Sri Hastuti Virgianti Pulukadang Sri Mulyani Sabang Suhartini Musa Supriadi Supriadi Susilawati, Niluh Eka Tahril Taslima Tiara Maharani, Tiara Tiwow, Vanny M A Trisnawati Trisnawati Tudjuka, Mora Delfita Uswatun Hasanah Wagiman, Saumadin Walanda, Ryka M Yeyet Sri Rahmi Yuli Nurmayanti Yulianti, Iluh Devi

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