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PENGARUH MODEL PEMBELAJARAN DISCOVERY LEARNING DAN MEDIA VIDEO PEMBELAJARAN TERHADAP HASIL BELAJAR DAN MOTIVASI BELAJAR SISWA PADA MATERI LAJU REAKSI Selfrida Sari Ginting, Sinta; Kembaren, Agus
JURNAL KOULUTUS Vol. 7 No. 1 (2024): JURNAL KOULUTUS
Publisher : LPPM Universitas Kahuripan Kediri

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Penelitian ini bertujuan untuk mengetahui apakah model pembelajaran Discovery Learningberpengaruh dan berhubungan terhadap hasil belajar siswa dan motivasi belajarnya. Sampel yangdigunakan, yakni siswa di kelas XI IPA SMAN 1 Bahorok, yang terdiri dari kelas XI MIA 1 adalahkelas eksperimen dan kelas XI MIA 2 adalah kelas kontrol. Data survei penelitian ini terdiri dari skorlembar observasi motivasi belajar serta hasil tes dari perbedaan pre-test dan post-test. Hasil penelitianmenyatakan bahwa hasil belajar dan motivasi belajar di kelas eksperimen dan kontrol dipengaruhioleh model pembelajaran. Kelas eksperimen menggunakan model Discovery Learning denganbantuan video animasi, sedangkan kelas kontrol menggunakan video animasi tanpa bantuan model.Nilai mean tersebut menunjukkan bahwa siswa pada kelas eksperimen mempunyai hasil belajar danmotivasi yang lebih tinggi dibandingkan siswa pada kelas kontrol. Data hasil pengujian hipotesisdengan menggunakan uji t diperoleh t hitung > t tabel = 12,47 > 2,036. Hasil motivasi belajar siswadengan menggunakan uji t menyatakan t hitung > t tabel = 2,58 > 2,036. Kesimpulannya, terdapathubungan antara motivasi belajar dan hasil belajar, seperti yang ditunjukkan oleh korelasi kelaseksperimen yakni 0,681 dan korelasi kelas kontrol yakni 0,627.

PENGARUH MODEL PEMBELAJARAN DISCOVERY LEARNING DAN MEDIA VIDEO PEMBELAJARAN TERHADAP HASIL BELAJAR DAN MOTIVASI BELAJAR SISWA PADA MATERI LAJU REAKSI Selfrida Sari Ginting, Sinta; Kembaren, Agus
JURNAL KOULUTUS Vol. 7 No. 1 (2024): JURNAL KOULUTUS
Publisher : LPPM Universitas Kahuripan Kediri

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

Penelitian ini bertujuan untuk mengetahui apakah model pembelajaran Discovery Learningberpengaruh dan berhubungan terhadap hasil belajar siswa dan motivasi belajarnya. Sampel yangdigunakan, yakni siswa di kelas XI IPA SMAN 1 Bahorok, yang terdiri dari kelas XI MIA 1 adalahkelas eksperimen dan kelas XI MIA 2 adalah kelas kontrol. Data survei penelitian ini terdiri dari skorlembar observasi motivasi belajar serta hasil tes dari perbedaan pre-test dan post-test. Hasil penelitianmenyatakan bahwa hasil belajar dan motivasi belajar di kelas eksperimen dan kontrol dipengaruhioleh model pembelajaran. Kelas eksperimen menggunakan model Discovery Learning denganbantuan video animasi, sedangkan kelas kontrol menggunakan video animasi tanpa bantuan model.Nilai mean tersebut menunjukkan bahwa siswa pada kelas eksperimen mempunyai hasil belajar danmotivasi yang lebih tinggi dibandingkan siswa pada kelas kontrol. Data hasil pengujian hipotesisdengan menggunakan uji t diperoleh t hitung > t tabel = 12,47 > 2,036. Hasil motivasi belajar siswadengan menggunakan uji t menyatakan t hitung > t tabel = 2,58 > 2,036. Kesimpulannya, terdapathubungan antara motivasi belajar dan hasil belajar, seperti yang ditunjukkan oleh korelasi kelaseksperimen yakni 0,681 dan korelasi kelas kontrol yakni 0,627.

Integration of Analytical Chemistry Flipbooks Based on Project-Based Learning in Improving Critical Thinking Skills and Scientific Literacy to Support SDG-4 Sari, Sri Adelila; Dewi, Ratna Sari; Saputra, Kana; Kembaren, Agus; Hasibuan, Hanisah; Talib, Corrienna Abdul
Jurnal Pendidikan IPA Indonesia Vol. 14 No. 1 (2025): March 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v14i1.21038

This study was aimed at assessing the effectiveness of Project-Based Learning (PjBL)-based analytical chemistry flipbooks in improving students’ critical thinking skills and scientific literacy, and linking the results to the achievement of Sustainable Development Goals (SDG-4), namely quality education. This study used a quantitative approach with a quasi-experimental design, involving two groups: an experimental group (n = 250) using PjBL-based flipbooks, and a control group (n = 250) using conventional textbooks. The projects in PjBL were designed to challenge students to apply critical thinking skills in solving real problems in analytical chemistry. Scientific literacy was measured based on students’ ability to understand, evaluate, and apply chemical concepts in the context of the project. Critical thinking skills and scientific literacy tests were used to measure learning outcomes before and after the intervention. The instrument in this study was a test of critical thinking skills and scientific literacy. Statistical tests showed that the data were normally distributed (significance value 0.216), homogeneous variance (0.074), and significant differences between the experimental and control groups (t = 0.038, p < 0.05). The increase in n-gain in the experimental group reached 0.9 (high category), compared to 0.63 (moderate category) in the control group. This study concluded that Project-Based Learning-based flipbooks were significantly more effective than conventional textbooks in improving students’ critical thinking skills and scientific literacy. The results of this study confirmed the superiority of PjBL-based flipbooks in significantly improving students’ critical thinking skills and scientific literacy compared to conventional textbooks. Statistical data support (normal distribution, homogeneous variance, significant differences between groups, and high n-gain in the experimental group) encourages the adoption of PjBL-based flipbooks as an effective learning strategy to achieve quality education according to SDG-4.

Penerapan model problem based learning (PBL) berbantuan media iSpring pada materi larutan elektrolit dan non elektrolit Felentina, Feronica; Agus Kembaren
Educenter : Jurnal Ilmiah Pendidikan Vol. 1 No. 12 (2022): Educenter : Jurnal Ilmiah Pendidikan
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/educenter.v1i12.173

This study aims to determine the average learning outcomes and learning motivation with the iSpring Media Assisted Problem Based Learning (PBL) learning model compared to conventional learning models. This research was conducted at SMA Negeri 1 Sunggal with the samples in this study were 2 classes, namely the experimental class in class X IPA 2 and the control class in class X IPA 3 which were obtained using purposive sampling technique. The research instrument consisted of a test instrument in the form of validated questions and a non-test instrument in the form of a learning motivation questionnaire. The results of the study for learning motivation using the independent sample t-test at = 0.05, the tcount value was 1.81. The results of the study on learning outcomes showed that the average value with the Problem Based Learning (PBL) learning model was 84.58 while the average value in the conventional learning model was 77.50. The gain calculation shows that the increase in learning outcomes in the experimental class is 72% with criteria while the control class is 68% with moderate criteria. From the results of the study, it was obtained that the tcount value was 4.94 Ha, which was accepted, namely the learning outcomes of students who were taught with the Problem Based Learning learning model assisted by the Ispring media were higher than the learning outcomes of students who were taught using conventional learning models on electrolyte and non electrolyte solutions. While the research results for the correlation test is 0.333. Thus, there is a significant correlation between learning motivation to increase student learning outcomes in the experimental class by 11%. This shows that the higher the motivation, the higher the learning outcomes, and vice versa.

Penerapan model problem based learning (PBL) berbantuan media iSpring pada materi larutan elektrolit dan non elektrolit Felentina, Feronica; Agus Kembaren
Educenter : Jurnal Ilmiah Pendidikan Vol. 1 No. 12 (2022): Educenter : Jurnal Ilmiah Pendidikan
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/educenter.v1i12.173

This study aims to determine the average learning outcomes and learning motivation with the iSpring Media Assisted Problem Based Learning (PBL) learning model compared to conventional learning models. This research was conducted at SMA Negeri 1 Sunggal with the samples in this study were 2 classes, namely the experimental class in class X IPA 2 and the control class in class X IPA 3 which were obtained using purposive sampling technique. The research instrument consisted of a test instrument in the form of validated questions and a non-test instrument in the form of a learning motivation questionnaire. The results of the study for learning motivation using the independent sample t-test at = 0.05, the tcount value was 1.81. The results of the study on learning outcomes showed that the average value with the Problem Based Learning (PBL) learning model was 84.58 while the average value in the conventional learning model was 77.50. The gain calculation shows that the increase in learning outcomes in the experimental class is 72% with criteria while the control class is 68% with moderate criteria. From the results of the study, it was obtained that the tcount value was 4.94 Ha, which was accepted, namely the learning outcomes of students who were taught with the Problem Based Learning learning model assisted by the Ispring media were higher than the learning outcomes of students who were taught using conventional learning models on electrolyte and non electrolyte solutions. While the research results for the correlation test is 0.333. Thus, there is a significant correlation between learning motivation to increase student learning outcomes in the experimental class by 11%. This shows that the higher the motivation, the higher the learning outcomes, and vice versa.

Effectiveness of Kepok Banana Peel Waste With Potassium Hydroxide Activation as Methylene Blue Dye Adsorbent Sidabutar, Putri Rebecca; Kembaren, Agus
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 7 No. 2 (2024): JULY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i2.62254

Banana peels are usually considered as waste and cause environmental pollution. However, banana peels can be used as an adsorbent material to reduce the impact of methylene blue dye use because they contain high lignocellulose. This study aims to determine the characterization, optimum mass and optimum time. The adsorbent was made using dried and carbonized banana peels at a temperature of 400°C for 2 hours. After the carbonization process, the adsorbent was activated using 5 M potassium hydroxide for 2.5 hours. Based on the results of the study, it showed an optimum mass of 0.121 grams and an optimum time of 90 minutes. The efficiency of methylene blue dye absorption on activated carbon was higher than that of banana peel carbon.

Preparation and Synthesis of Activated Carbon From Areca Nut Shell Coated with Nanochitosan From Shrimp Shell Herlinawati Herlinawati; Qisthina Fildzah; Junifa Layla Sihombing; Agus Kembaren
Journal of Carbazon Vol 3, No 1 (2025): June 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jocarbazon.v3i1.45959

This study aims to determine the manufacture of adsorbents made from activated carbon areca nut shell coated with nanochitosan from shrimp shells. The carbon from the areca nut shell was obtained by heating process using a temperature of 300oC. The carbon obtained is activated with H2SO4 and then modified by coating activated carbon with nanochitosan. Chitosan was prepare through isolation the stages of deproteinization, demineralization, and deacetylation. Chitosan will be characterized using FTIR. The change in size of chitosan to nano chitosan was evaluated by ionic gelation method with 1% NaTPP. The nanochitosan obtained will be characterized using PSA. The results of FTIR characterization showed the presence of an N-H group at a wave number of 3345.89 cm-1. PSA characterization gave a result that the particle size of shrimp shell chitosan was nano-sized, which was 51.11 nm.

The Preparation and Characterization of Silica Composite Adsorbent from Palm Oil Boiler Ash and Chitosan Therecia Ginting; Agus Kembaren
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 9 No. 2 (2026): JULY 2026
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v9i2.72574

FTIR characterization of silica confirmed the presence of hydroxyl groups (-OH) at wave number 3386 cm-1. Wave number 1059 cm-1 Si-O-Si group, 783 cm-1, 984 cm-1 symmetric stretching vibration of Si-O-Si group, wave 452 cm-1 Siloxane group, in silica chitosan composite wide absorption band at 3356 cm-1 (-OH) group from silanol group (Si-OH) which is a functional group derived from silica as well as (-OH) and (-NH2) groups, 1628 cm-1 amide group (-NH) wave 1421 cm-1 related to symmetric bending vibration of chitosan oligosaccharide chain namely –CH2 and –CH3 groups which can be influenced by the presence of silica matrix 1079 cm-1 Si-O-Si group, wave 593 cm-1 and 488 cm-1 bending vibration of Si-O-Si and Si-O. The optimum result of Pb2+ adsorption using silica chitosan composite adsorbent was 94.70% with an absorption capacity of 1.2467 mg/g. With a concentration of 5.266 ppm it became 0.279 ppm.

PENGEMBANGAN E-MODUL KIMIA BERBASIS INKUIRI TERBIMBING DENGAN PENDEKATAN Culturally Responsive Teaching (CRT) TERHADAP HASIL BELAJAR SISWA PADA MATERI LAJU REAKSI DI SMAS BUDI SATRYA MEDAN Nurjelita Sinaga, Anggian; Kembaren, Agus
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 Nomor 02, Juni 2026 Public
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.51883

This study aims to determine the level of feasibility, practicality, and improvement in student learning outcomes after using a guided inquiry-based chemistry e-module with a Culturally Responsive Teaching (CRT) approach on the reaction rate material. The type of research used is research and development (R&D) by applying the ADDIE (Analysis, Design, Development, Implementation, Evaluation) development model. The subjects of this study were 35 students of class XI Mikroskop* of SMA Swasta Budi Satrya Medan. Data collection instruments were in the form of validation sheets for experts, student response questionnaires, and learning outcome tests (pre-test and post-test). The e-module was designed using the Canva application and converted using the Heyzine Flipbook platform. The results of the study showed an average feasibility percentage of 91.3% with the category of "very feasible", which was based on validation by material experts of 89%, media experts of 92%, and learning experts of 93%. The practicality test through student response questionnaires obtained an average percentage of 91% indicating the criteria level of "Very Practical". The improvement of students' cognitive learning outcomes was analyzed using the Normalized Gain (N-Gain) test of 0.70, shown based on an increase in the pre-test score of 40.2 increasing to 82.2 in the Post-test, which indicates an increase in learning outcomes in the high category. Based on these results, it can be concluded that the chemistry e-module based on guided inquiry with the CRT approach on the reaction rate material produced has met the criteria of being feasible, practical, and effective in improving student learning outcomes.

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