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All Journal Jurnal Pendidikan Kimia Indonesia Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) QUANTUM: Jurnal Inovasi Pendidikan Sains Jurnal Akademika Kimia Guru Tua : Jurnal Pendidikan dan Pembelajaran International Journal of Active Learning Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Jurnal Jejaring Matematika dan Sains Jurnal Pengabdian kepada Masyarakat Nusantara Ideguru: Jurnal Karya Ilmiah Guru Jurnal Riset Pendidikan MIPA Panrannuangku Jurnal Pengabdian Masyarakat EduLine: Journal of Education and Learning Innovation Media Eksakta Jurnal Akademika Kimia Jurnal Ilmu Pendidikan Indonesia Jurnal Kreatif Online Jurnal Banua Oge Tadulako Journal International Journal of Teaching and Learning (INJOTEL) Jurnal Akademika Kimia

Afadil

Program Studi Pendidikan Kimia, Fakultas Keguruan Dan Ilmu Pendidikan, Universitas Tadulako, Palu, Sulawesi Tengah, Indonesia

Author-ID : 1017444

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Mathematics Physics Public Health Social Sciences Other

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Antioxidant Activity Tests of Extract of Principle Crafts (Phaleria macrocarpa) Tri Putri; Anang W. M. Diah; Afadil Afadil
Jurnal Akademika Kimia Vol. 8 No. 3 (2019)
Publisher : Universitas Tadulako

Phaleria macrocarpa contains secondary metabolite compounds such as alkaloids, terpenoids, saponins, polyphenols, tannins, sterols, and coumarins. Those metabolites are antioxidants and can be efficacious in the healing of various degenerative diseases such as cervical cancer and diabetes. This plant is widely grown in Tindaki Village, Parigi Mautong, Central Sulawesi. The aim of this study was to determine the antioxidant power of those phaleria macrocarpa fruit extract. This study was conducted by using maceration extraction technique with ethanol as solvent, and compound 2,2-difenil-1-picrilhidrazil (DPPH) as source of free radical, and vitamin C as the positive control. The UV-Vis spectrophotometer was used to measure the absorbance of the extract. Various concentrations of the extract used were 5 ppm, 15 ppm, 25 ppm, and 35 ppm. The results showed that the IC50 value of the fruit extract was 28.242 ppm, while the IC50 value of vitamin C was 19.302 ppm. These IC50 values show that vitamin C was a stronger antioxidant activity than the fruit extract, but the fruit extract was still as a very strong natural antioxidant category.

Differences in Learning Outcomes of Chemistry through Cooperative Learning Model Type Make a Match and Numbered Head Together on the Material of Electrolyte and Nonelectrolyte Solution of Students Class X in SMA Negeri 9 Palu Nur Qamariya; Minarni R. Jura; Afadil Afadil
Jurnal Akademika Kimia Vol. 8 No. 3 (2019)
Publisher : Universitas Tadulako

Application of learning model is expected to build good communication between students with teachers and students with students in an effort to improve understanding of a concept. This study aimed to determine the differences in the learning outcomes of chemistry through cooperative learning model type make a match and numbered head together in the material of electrolyte and nonelectrolyte solution of students class X SMA Negeri 9 Palu. This type of research was pre-experimental with the static group pretest-posttest design. The sample used in this research was the students of class Xa (n = 23) as the first experiment 1 and students of class Xb (n = 23) as the second experiment 2 with. The result of data analysis obtained, the mean value of the experiment class 1 was 74.24 and in the experiment class 2 was 67.28. The result of hypothesis testing with t-test statistic on two side was obtained - ttable ≤ tcount ³ + ttable that was (-1.68 <3.27> +1.68 with significant level (α = 0.05) and degrees of freedom = 44. This indicates that H0 was rejected and Ha was accepted so that it can be concluded that there are differences in the students’ learning outcomes of chemistry through cooperative learning model type make a match and numbered head together in the material of electrolyte and nonelectrolyte solution of class X SMA Negeri 9 Palu.

Misconception Reduction by Implementing Contextual Teaching and Learning (CTL) Approach on Salt Hydrolysis Material in Grade XI at SMA 1 Palasa Moh. Raisul; Tahril Tahril; Afadil Afadil
Jurnal Akademika Kimia Vol. 9 No. 2 (2020)
Publisher : Universitas Tadulako

Misconception is a conception of someone who is not in accordance with the scientific concept recognized by experts. Student’s who experience misconceptions will make mistakes in understanding concept’s and occur continuously. This study aimed to determine the percentage of reduction of students’ misconception in grade XI SMA 1 Palasa on salt hydrolysis by implementing contextual teaching and learning (CTL) approach. This study was a quantitative descriptive study with the number of samples of 2 classes, that’s Class XI Science A consisted of 22 students, and Class XI Science B consisted of 22 students. The instrument test was a reasoned multiple choice test accompanied by a certainty of response index (CRI) consisting of 20 items. The results showed that the percentages of the average reduction of students’ misconceptions in the class XI science A and in the class XI science B on salt hydrolysis with contextual teaching and learning (CTL) approach were 19.6 and 9.8%, respectively.

The Effect of PQ4R (Preview, Question, Read, Reflect, Recite, Review) Learning Method with Internet-Assisted on Learning Outcomes of Students SMA Labschool UNTAD Palu on Salt Hydrolysis Ersa W. Lakukua; Mery Napitupulu; Afadil Afadil
Jurnal Akademika Kimia Vol. 9 No. 1 (2020)
Publisher : Universitas Tadulako

This study aimed to describe the effect of PQ4R learning methods with internet-assisted on students’ learning outcomes of class XI SMA Labschool UNTAD Palu on salt hydrolysis material. The type of research was quasi-experimental with a nonrandomized pretest-posttest control group design. This study was conducted with two groups, namely the XI IPA class 1 as the experimental group (n = 21) and the XI IPA class 3 as a control group (n = 23). The testing of the research data used a two-party t-test statistical analysis. The results of data analysis obtained that the average of an experimental class was 63.19 with a standard deviation of 7.37 and a control class was 57.22 with a standard deviation of 8.19. The results of testing the hypothesis with the two-party t-test statistics obtained -ttable<tcount> +ttable (tcount 2.54 and ttable 1.68) with a significance level (α) = 0.05 and degrees of freedom (dk) = 35. Based on the results testing of the hypothesis, it can be concluded that H0 was rejected and H1 was accepted. This means that the PQ4R learning method with internet-assisted has a positive effect on the learning outcomes of students class XI SMA Labschool UNTAD Palu.

The Implementation of SAVI (Somatic, Auditory, Visual, and Intellectual) Learning Model toward Critical Thinking Ability of Students in Grade XI on the Subjects of Solubility and Solubility Product Constant (Ksp) Sarmilah Sarmilah; Afadil Afadil; Vanny M. A. Tiwow
Jurnal Akademika Kimia Vol. 10 No. 1 (2021)
Publisher : Universitas Tadulako

This study aimed to determine students' critical thinking ability through the implementation of SAVI (somatic, auditory, visual, and intellectual) learning model on the subject of solubility and solubility product constant (Ksp) at SMA Negeri 5 Model Palu. The study used one group pretest-posttest design. The instruments were lesson plans, critical thinking tests, students' worksheets, and validated observation sheets. Data of critical thinking abilities were analyzed using rubrics with three indicators, i.e. interpretation, analysis, and inference. Results of data analysis on students' critical thinking skills at the pretest on each indicators in Experiment class I were 25.84, 11.13, and 2.44%, respectively; while in class II were 23.51, 1.38, and 0%, respectively. The posttest in Experiment class I were 69.94, 61.13, and 53.51%, respectively, while in class II were 79.55, 48.61, and 49.07%, respectively. The average of students' critical thinking skills ability in experiment class I was 61.02%, and class II was 61.47%. Both of them were in the moderate category. This study concludes that students' critical thinking skills ability with the implementation of SAVI learning model is in a good category. The average of students' critical thinking skills ability in experiment class I was 61.02%, and in experiment class II is 61.47%. Both of them were in the moderate critical thinking category. This study concludes that students' critical thinking skills ability with the implementation of SAVI learning model is in a good category.

Analysis of Lycopene Content and Antioxidant Activity Test of Katokkon Chili Extract (Capsicum chinense Jacq) Febryna V. Maddo; Siti Aminah; Afadil Afadil
Jurnal Akademika Kimia Vol. 10 No. 4 (2021)
Publisher : Universitas Tadulako

This study aimed to determine lycopene contents and the antioxidant activity of katokkon chili extract. The extraction process of katokkon chili used the maceration method with the mixture of n-hexane : acetone : ethanol (2:1:1). The concentrated extract of katokkon chili was obtained through the evaporator process at a temperature of 40 ˚C. The analysis process used a UV-Vis spectrophotometer in which the absorbance reading was at λ = 472 nm. The average content of lycopene in katokkon chili extract was 1.457 mg/100g. Testing the antioxidant activity of katokkon chili extract used the DPPH (2,2-diphenyl-1-picrylhydrazyl) method with positive control the vitamin C. The absorbance readings for the antioxidant activity test were at λ = 517 nm. The test results showed that the antioxidant power of katokkon and vitamin C extracts in reducing DPPH free radicals had a similar result which was equally strong. The IC50 value for chili katokkon extract was 13.84 mg/L, and the IC50 value for vitamin C was 5.78 mg/L, so it can be concluded that chili katokkon can be an alternative source of natural antioxidants to replace vitamin C.

Conceptual Changes of Students in Thermodynamics in Physical Chemistry Course Through The Implementation of Blended Learning Afadil Afadil; Sitti Rahmawati; Suherman Suherman
Jurnal Akademika Kimia Vol. 10 No. 3 (2021)
Publisher : Universitas Tadulako

This study aims to determine the conceptual changes of students after participating in learning with a blended learning approach on Thermodynamics material. This research is a type of pre-experimental (pre-experimental design) with a One Group Pretest-Postest Design. The blended learning approach is applied using the Problem Based Learning model. The research sample was Class C Odd Semester 2019/2020 students which consisted of 34 students who programmed Physical Chemistry courses. The instrument used is a two-tier multiple choice test which includes concepts in Thermodynamics material which is equipped with a valid CRI. The blended learning approach is one approach that can be used that facilitates student activities in utilizing ICT through the delivery of materials, discussion of task completion, and training in the search for teaching materials on Thermodynamics material. The results showed that misconceptions still occur in every concept of Thermodynamics. The average reduction of misconceptions (MC) is 11.2%, the increase in the number of students to knowing concept (KC) classically is 19.2%, and the decrease in the number of students unknowing concept (UKC) is classically 8.1%. Students' conceptual changes to the material of Thermodynamics are still low. Students are required to understand well the content of the material related to basic concepts, mathematical equations (formulas), and the applicative forms of concepts in everyday life in accordance with the characteristics of the thermodynamic material.

Copigmentation of Flavonoids of the Gadung Mango Bark (Mangifera Sp) as a Coloring Substance Moh. Sahril; Vanny M. A. Tiwow; Afadil Afadil
Jurnal Akademika Kimia Vol. 10 No. 4 (2021)
Publisher : Universitas Tadulako

Flavonoids are pigments in the gadung mango bark that produce a yellow color. The research on copigmentation of flavonoids from gadung mango bark (Mangifera sp) as coloring agents was carried out by the maceration method using 96% ethanol. The extract obtained was concentrated using a vacuum rotary evaporator at 40 oC. The study aimed to determine levels of flavonoids and stability of color gadung mango bark on the inner and outer of the result copigmentation as a coloring agent. Measurement of total flavonoid levels at a wavelength of 520 nm and 700 nm using UV-Vis spectrophotometry. The results of this study indicate that the total flavonoids levels in the inner and outer gadung mango bark samples were 0.162 mg/g and 0.359 mg/g, respectively. The color stability of flavonoids of the gadung mango bark inside and outside as the results of copigmentation was stable at the temperature 35 oC and the results obtained in the color stability test of the hero cloth through washing soap water was with a 0 day in 5 hours.

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 Use of Augmented Reality Based-Learning Media to Reduce Students' Misconceptions Frelyana Tiro; Afadil Afadil
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.pp140-145

The research objective is to determine whether using AR molecules as a learning medium can assist students in reducing their misconceptions about molecular materials. It was pre-experimental research with a one-group pre-test-post-test design. The average level of validity of the learning media used, according to the findings, is 70.3% ("valid" classification). The average reduction of misconceptions (MC) among students using learning media for the entire concept is 12.8 %, 9.2 % for students who do not understand the concept (DUC), and 22.0 % for students who understand the concept (UC). Based on these findings, it is possible to conclude that AR molecule-based learning media can be used to reduce students' misconceptions about molecular materials.

Co-Authors AA Sudharmawan, AA Agustin Tiwow Ahdiat, Mohammad Alimuddin, Chatifah Amran Rede Anang W. M. Diah Anang Wahid M.Diah Ardiansyah Asmita, Asmita Azzajjad, Muhammad Fath Baharuddin Hamzah Baharuddin Hamzah Catri, Ni Made Dariati Dariati Daud Karel Walanda Detris Poba Devi, Sinta Dewi Masyitha Dewi Satria Ahmar Diah, Anang WM Ersa W. Lakukua Esterlina Marpaung, Meida Fahrul Riski Febryna V. Maddo Frelyana Tiro H.J, Nur Rahmadana Safitri Haeruddin Haeruddin Hajerina, Hajerina Halawa, Adrianus Hasmawati Hasmawati Holyness Nurdin Singadimedja Indasari, Indasari Irwan Irwan Irwan Said Jamaludin M Sakung Kasmudin Mustapa Lilies N Tangge M. Diah, Anang Wahid Magfirah Magfirah Magfirah, Magfirah Marpaung, Meida E. Matamay, Zubair Mery Napitupulu Minarni Rama Jura Minarni Rama Jura Moh. Raisul Moh. Sahril Mohammad Jamhari Mohammad Jamhari N. Tangge, Lilies N.Tangge, Lilies Narayanti, Putu Satya Nur Qamariya Nur Rahmah Nurjannah, Ida Nursupiamin Nursupiamin, Nursupiamin Nurwahyuni Pathuddin Paulus Hengky Abram Pulukadang, Sri H. V. Purnama Ningsih Rabasia Rahmawat, Sitti Ramadani, Ersa Ratman Rina Andriana Rizza R. T. Agustina Roslina Roslina, Roslina S. Ahmar, Dewi Sangkota, Vivi Dia A. Sarmilah Sarmilah Sely Artasasta Lawongo Siti Aminah Siti Hajar Siti Nuryanti Sitti Rahmawati Sri Hastuti Virgianti Sri Hastuti Virgianti Pulukadang Sri Mulyani Sabang Sri Poedjiastoeti Suciati, Indah Suherman Suherman Suherman Suherman, Suherman Sukmawati Sukmawati Suyono Suyono Tahril Tiro, Frelyana Tri Putri Tri Santoso Tri Santoso Tri Santoso Unggul Wahyono Vivi Dia Afrianti Sangkota Vivi Diah Sangkota Wahda Nur Alisa Wahyuni H. Mailili Wildana Wildana, Wildana WM Diah, Anang Yuli Nurmayanti Zulhan, Zulhan

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