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Analysis of Flavonoid Levels in Extract of Gambas Fruit (Luffa acutangula L) Originating from the Village of Posona District Parigi Moutong Aharudin Aharudin; Kasmudin Mustapa; Minarni R. Jura
Jurnal Akademika Kimia Vol. 9 No. 2 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2020.v9.i2.pp102-106

Abstract

Gambas fruit (Luffa acutangula L) is a cultivable plant. Gambas fruit can be used as an alternative free radical antidote. The purpose of this study was to determine the level of flavonoids in extract of gambas fruit (Luffa acutangula L) originated from Posona village of Parigi Moutong Regency. This research uses UV-Vis spectrofotometry analysis method. Flavonoids test was done by extracting the sample using 1% HCl solvent in ethanol. The result of the experiment showed that flavonoid level on the fruit of gambas (Luffa acutangula L.) was young gambas 10.60 mg/100g and old gambas 2.62 mg/100g.
Identification of Student Misconception using a Three-tier Diagnostic Test on Colloid Ratman Ratman; Nurafni Nurafni; Kasmudin Mustapa; Minarni R. Jura; Nurida Nurida; Nurasiah Nurasiah
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.pp129-133

Abstract

This study aims to identify the percentage of misconceptions that occur in students on colloid material in class XI MIPA 2 SMA Negeri 1 Dampal Selatan Kabupaten Tolitoli is based on the results of a three-level diagnostic test and shows which subconcepts have the highest and lowest conceptions. The instrument used in this study was a three-level multiple choice diagnostic test. The results showed students' misconceptions about colloid material in class XI MIPA 2, which was 65.51%. The results of this study indicate that the level of students' misconceptions about colloidal material is a high category.
Misconceptions Reduction of Science High School Students on Buffer through Remedial Using Conceptual Change Anna Kurnia; Tri Santoso; Ijirana Ijirana; Sri Mulyani; Kasmudin Mustapa
Jurnal Akademika Kimia Vol. 10 No. 3 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2021.v10.i3.pp159-166

Abstract

This study aimed to analyze the results of the reduction of misconceptions among SMA Negeri 5 Palu students on the buffer material using the conceptual change learning strategy. This research is a type of pre-experimental research with a research design that is One group pretest-posttest design. This study contained one experimental group, namely students whose learning outcomes did not reach the minimum completeness criteria (MCC), then given a pre-test to determine the initial state of the experimental group, then given treatment, and given a post-test. Testing student misconceptions data using CRI. The results showed that the average percentage of students, who knew the concept (KC), did not know the concept (DKC), and misconceptions (MC) before the application of conceptual change learning strategies were 38.1%, 45.2%, and 16, respectively. 6% and the percentage of students knowing the concept (TC), not knowing the concept (NKC), and misconception (MC) after the application conceptual change learning strategies respectively 87.4%, 12.6%, and 0%. In conclusion, the average percentage reduction in misconceptions of grade XI IPA SMA Negeri 5 Palu on the buffer through remedial using the conceptual change learning strategy was 16.6%
The Analysis of the Honesty and Responsibility Characters of Chemistry Education Study Program Students on Examinations Suherman Suherman; Sitti Rahmawati; Kasmudin Mustapa; Detris Poba; Nur Azizah
Jurnal Akademika Kimia Vol. 10 No. 3 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2021.v10.i3.pp167-173

Abstract

Honesty and responsibility should be a principle held by students. But, there are still problems of dishonesty and irresponsibility of students during exams. This study aimed to analyze the honesty and responsibility character of chemistry students during exams. The research samples were 39 students. Data were collected by observation and interviews technique, by using observation and questionnaires sheets. Data were analyzed by using descriptive statistics. The results showed that the honesty and responsibility of chemistry students were in the sufficient category where the percentage of honesty and responsibility of students based on the observation sheets was 43.6% and 49%, respectively. While the questionnaire responsibility students were 46.2% and 43.6%, respectively.
Antioxidant Activity Test of Acetone and Ethanol Extracts of Cocoa (Theobroma cacao L.) Beans Husk Siti S. K. Pandjo; Kasmudin Mustapa; Purnama Ningsih
Jurnal Akademika Kimia Vol. 10 No. 1 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2021.v10.i1.pp1-8

Abstract

Cocoa beans husk is waste produced from the cocoa processing industry containing alkaloid, flavonoid, tannin, saponin, and triterpenoid compounds. This material has the potential to be used as a source of natural antioxidant compounds. This study aimed to determine the antioxidant activity of cacao beans husk extracts by comparing acetone and ethanol as solvents through the extraction process. This antioxidant activity was determined using the DPPH (1,1-diphenyl-2-picrylhydrazyl) test method measured by UV-Vis spectrophotometer after adding an extract of cocoa beans husk. The positive control was vitamin C, while the negative control was DPPH solution dissolved in ethanol. The results showed that the extract of cacao beans husk has more potent antioxidant activity with a lower IC50 value of 181.2 ppm, while the acetone extract has an IC50 value of 247.9 ppm
Application of Learning Models of Concept Attainment and Problem Based Learning Against High School Students' Creative Thinking Ability on Redox Material Lisa N. M. Sakaria; Kasmudin Mustapa; Anang Wahid M. Diah
Jurnal Akademika Kimia Vol. 10 No. 1 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2021.v10.i1.pp9-14

Abstract

Creative thinking is thinking to determine the new relationships between things, such as finding new solutions to a problem, finding new systems, and finding new artistic forms. This study aimed to analyze students' creative thinking ability by applying concept attainment and problem-based learning models in the redox material of class X SMA Negeri 9 Palu. This type of research was pre-experimental with the static group pre-test post-test design. This study used 2 classes, namely class X MIA 1 as experimental class 1 (n = 22) and class X MIA 2 as experimental class 2 (n = 22). Data analysis of students’ creative thinking was performed using the test given after learning (post-test). The results of this study indicated that the percentage value of the average creative thinking of the experimental class 1 students was 74.5% with the high category and the achievement of aspects of creative thinking of students with the percentage from highest to lowest in the originality aspect were 76.7%, flexibility aspect was 74.1%, and the fluency aspect was 72.7%. While the average percentage of experimental class 2 was 76.6% with the high category and the achievement of aspects of creative thinking of students with the highest to lowest percentage of the fluency aspect was 84.5%, the originality aspect was 75.1%, and the flexibility aspect was 70.2%. The results of this study can be concluded that the application of the Concept Attainment and Problem Based Learning models were very good in creative thinking skills of students class in SMA Negeri 9 Palu on Redox material.
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.
Analysis of Numerical Ability Students on Chemical Equilibrium Mustapa, Kasmudin; Rahmawati, Nur; Ratman, Ratman; Marpaung, Meida Esterlina; Mawaddah, Hayyatun
Journal of Disruptive Learning Innovation (JODLI) Vol 5, No 1 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um072v5i12023p16-22

Abstract

This study aims to determine the level of numerical ability in class XI students of SMA Negeri 1 Parigi Kab. Parigi Moutong. This research was carried out from January to March 2023. The research method used is quantitative descriptive. Data analysis using descriptive statistics. The sampling technique is random sampling. The research instrument used was a description numerical ability test. The results showed that the level of students' numerical abilities on the indicators of performing mathematical calculations was in the low category, with a percentage of 28.44%. The logical thinking indicator obtained low category results with a percentage of 28.24%. The problem-solving indicator obtained a very low category result of 11.45%. On indicators recognising patterns and relationships between numbers, results with a percentage are in the very low category. Data on the results of students' numerical abilities at SMA Negeri 1 Parigi are categorised as very low. The results of this study are expected to be a source of information regarding the numerical ability of class XI students in chemical equilibrium material.
The Influence of Project-Based Learning Model on Students' Learning Outcomes in Reaction Rate Material Hanisa, Siti; Mustapa, Kasmudin; Ratman, Ratman; Ahmar, Dewi Satria; Mawaddah, Hayyatun
Journal of Disruptive Learning Innovation (JODLI) Vol 4, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um072v4i22023p107-115

Abstract

This study aims to determine the effect of the Project Based Learning learning model on student learning outcomes in the matter of reaction rates at SMA Negeri 1 Ampibabo. The population in this study were all students of class XI IPA at SMA Negeri 1 Ampibabo, academic year 2022/2023, totaling 150 people consisting of 5 classes. This type of research is a type of quasi-experimental research with a research design using the pretest and posttest of the experimental group and the control group. Sampling was carried out based on special considerations (purposive sampling) with a research sample of XI IPA E totaling 30 students as an experimental class using the Project Based Learning learning model, XI IPA A totaling 30 students as a control class using conventional learning models. Data collection techniques using test techniques, Based on the results of the study it can be concluded that there is an influence of the learning model on the material on the reaction rate on student learning outcomes at SMA Negeri 1 Ampibabo. This is based on the results of calculations using the SPSS Version 26 application where the value of Sig (2-tailed) = 0.007 <0.05 then Ha is accepted and Ho is rejected, meaning that there is a significant influence between the use of the Project Based Learning learning model on the reaction rate material on learning outcomes students at SMA Negeri 1 Ampibabo.
The Effect of Using Google Classroom and Whatsapp Group Applications on Students’ Interest and Learning Outcomes in Chemistry During The Covid-19 Pandemic mustapa, Kasmudin; Ahyar, Aditya Kurniawan; Ratman, Ratman; Magfirah, Magfirah
Journal of Disruptive Learning Innovation (JODLI) Vol 4, No 1 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um072v4i12022p32-42

Abstract

This study aimed to determine the effect Google Classroom and WhatsApp Group applications on the interest and learning outcomes in chemistry during the Covid-19 pandemic at SMA Negeri 1 Ampibabo. It was a quasi-experimental study. The sample was students of class X MIA D and X MIA E for the 2021/2022 academic year, totaling 66 students. The interest in learning and learning outcomes were tested statistically using analysis t-test two parties. The results of data analysis showed that the mean score of student learning outcomes in the experimental class was 78.5, while in the control class was 86. The data analysis of questionnaires on students’ learning interest showed that the experimental class was in a "Undecided" attitude with a positive category of 63, 2% and the control class is in the "Strongly Agree" attitude with a positive category of 82.1%. The results of the normality test for each data set revealed that all data groups of interest and learning outcomes in both the experimental and control classes were normally distributed, as indicated by a significant probability value> (0.05). Similarly, the homogeneity assumption test results revealed that all data groups in observation variables were homogeneous, with a significant probability value> (0.05). Thus, there was an effect of using the Google Classroom and WhatsApp Group applications on students’ interest and learning outcomes in chemistry during the Covid-19 Pandemic at SMA Negeri 1 Ampibabo.
Co-Authors AA Sudharmawan, AA Abdul Hakim Abdul Wahab Syakhrani Achmad, Nur Aisyiyah Afadil Agus Nasir, Agus Agustin Tiwow Aharudin Aharudin Ahmar, Ansari Saleh Ahyar, Aditya Kurniawan Al Gifary, Muhammad Amiruddin Hatibe Anang Wahid M.Diah Anna Kurnia Arfiani, Arfiani Arnes Yuli Vandika Atti Yudiernawati, Atti Azizah Azizah Azzajjad, Muhammad Fath Daud Karel Walanda Daud, Penisia Detris Poba Detris Poba Dewi Satria Ahmar Diah, Anang W. M. Dian Puspita Sari Diana Natalia Doranggi, Selvina Efi Pujianti Puspita Dewi Ein Berkat Ering, Novita Septiani Esterlina Marpaung, Meida Esther Hesline Palandi Fardiana, Fardiana Fikran Fikran Fitri Nurhayati Hadenan Towpek Hajerina, Hajerina Hanisa, Siti hardianti hardianti Haslinda, Andi Hasmawati Hasmawati Hayyatun Mawaddah Herianto Herianto Ijirana Indah Suciati Indasari, Indasari Irwan Irwan Iyan Nurdiyan Haris Juharni, Juharni Jujuk Ferdianto Kifli, Moh. Kokou, Rizka Kurniawati Lahamado, Olfiana T. Lationo, Mahdayanti Latupeirisa, Veronica Purnama Sari Lewapadang, Mutiara Lisa N. M. Sakaria Lumentut, Regina S. Magfirah Magfirah Magfirah, Magfirah Mbosisi, Sifra Bertin Minarni Rama Jura Minarni Rama Jura Minarni Rama Jura Minarni Rama Jura Minarni Rama Jura Minarni Ramajura Muh Junaidi Muhammad Agus Muljanto Muslimah Muslimah Nanda Aprilia Lampasio Ni Nengah Leni Lestari Nina Mardiana (F01108057) Novianti, Muli Novianty Djafri Nur Azizah Nur Fadhilatu Rahmah, Nur Fadhilatu Nur Rahmawati Nurafni Nurafni Nurasiah Nurasiah Nurida Nurida Nurida Nurida, Nurida Nurkaidah, Nurkaidah Nursupiamin Nursupiamin, Nursupiamin Oktoreza, Yayuk Mentari Rahayul Panontji, Putri Ningsi A. Paputungan, Vinky Livari Paulus Hengky Abram Permata Fonna Purnama Ningsih Ratman Ratman Ratman Ratman Ratman Ratman Ratman Ratman Ratman Ratman Ratman Reny, Reny Restyani, Restyani Rina Andriana Rizky, Amalia Rusmawati, Retno Danu Sadimo, Mariskian M. Salsabila, Unik Hanifah Sinta Reski Siti Hajar Siti Nuryanti Siti S. K. Pandjo Sitti Rahmawati Soetam Rizky Wicaksono Sore, Udin B. Sri Hastuti Sri Hastuti Virgianti Pulukadang Sri Mulyani Sri Mulyani Sabang Sudarmo, I Gede Suheria, Suheria Suherman Suherman Suparman Arif Syaiful M Syamsul Arifin Tompo, Natsir Tri Santoso Tri Ulandari Astaring Virgianti Pulukadang, Sri Hastuti Wahda Nur Alisa Wahyuni H. Mailili Warsito, Joko Yulianti Siako Yulinda, Lika Yusdin Gagaramusu Zaenab