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Effect of Simargaol - Gaol (Aglaonema Modestum Schott Ex Engl) Leaf Extract on Serum HDL, LDL and Triglyceride Levels of Rats Fed High-Fat Feed Gulo, Kristin Wulan Liberti Vivanis; Riris, Ida Duma; Roza, Destria; Nainggolan, Bajoka; Juniar, Anna
Indonesian Journal of Advanced Research Vol. 3 No. 5 (2024): May 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v3i5.8970

Cholesterol in the body is divided into three parts, namely Low Density Lipoprotein (LDL) High Density Lipoprotein (HDL) and Triglycerides. Excessive cholesterol in the blood can cause hypercholesterolemia. The Simargaolgaol plant (Aglaonema modestum Schott ex Engl) is one of the plants that people use as traditional medicine to cure various types of diseases. This study aims to analyze the effect of administering simargaolgaol leaf extract on reducing cholesterol levels in male Wistar rats fed a high-fat diet. This study used a Completely Randomized Design (CRD) consisting of 6 groups, namely K0+ (Normal Group), K0- (Negative Control), K+ (Positive Control given simvastatin), varying doses 100 mg/KgBW, 200 mg/KgBW, 300mg/KgBW. The data obtained was analyzed using One way Anova statistical analysis with SPSS for Windows software. The data that has been analyzed has a significant value of p<0.05, which means that administration of ethanol extract of simargaolgaol leaves (Aglaonema modestum Schott ex Engl) shows an effect on reducing cholesterol in the blood. The conclusion of this research is that the ethanol extract of simargaolgaol (Aglaonema modestum Schott ex Engl) leaves has anti-cholesterol activity at a minimum dose of 300 mg/KgBW.

The Effect of Project Based Learning Model (PjBL) Assisted by KOKAMI Media on Motivation and Learning Outcomes on Chemical Equilibrium Material Tampubolon, Cindy Claudin; Riris, Ida Duma; Nainggolan, Bajoka; Syafriani, Dewi; Ginting, Elfrida
Journal of Science and Science Education Vol. 6 No. 1 (2025): April
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jossed.v6i1.11031

This study aims to determine the learning of the Project Based Learning (PjBL) Model assisted by KOKAMI media (Kotak dan Kartu Misteri) on learning outcomes, learning motivation, and the significance between learning outcomes and motivation in chemical equilibrium materials at SMA Negeri 17 Medan. The sample population of all students in grade XI and as a random sample was taken from two classes, namely class XI B as an experimental class and XI C as a control class. The initial learning was carried out in the same pre-test, then learning was carried out for the control class (using the conventional model without KOKAMI media) while the experimental class (using the PjBL model with the help of KOKAMI media). The results data were analyzed using normality, homogeneity, and linearity tests. The hypothesis was tested by simple linear regression, independent t-test, and correlation test. The average pre-test score of the experimental class was 34,00 8,17 the control class was 33,14 6,57 post-test (89.71 3.60 ; 79.57 6.36), with a higher N-Gain value (0.84 0.065 ; 0.69 0.016 ). The results of the simple linear regression test showed a significance value of 0.000 ≤ (α = 0.005) with an average learning motivation of 87.25 (high category), so that Ha was accepted. The t-test shows the value of sig. 0.000 ≤ (α = 0.005), and the third hypothesis test showed sig. 0.001 ≤ (α = 0.005), indicating a significant relationship between learning outcomes and learning motivation

Development of E-Module Discovery Learning Integrated Science Literacy by Kvisoft Flipbook Maker on Chemical Equilibrium Lingga, Jeremi Ramon; Nainggolan, Bajoka
Jurnal Inovasi Pembelajaran Kimia (Journal of Innovation in Chemistry Education) Vol. 7 No. 2 (2025): OCTOBER 2025
Publisher : Universitas Negeri Medan

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

Chemical equilibrium is an abstract concept illustrated by concrete examples requiring understanding of macro, submicroscopic, and symbolic levels and their interconnections. Observations at SMAN 2 Sidikalang show that learning still relies on textbooks, especially for chemical equilibrium, which limits student engagement and creativity due to minimal technology use. This research aims to obtain the development of an e-module Discovery Learning integrated science literacy by Kvisoft Flipbook Maker on chemical equilibrium to improve student learning outcomes and obtain positive responses from students. This research uses the type of Research and Development (R&D) using a 4D development model. The e-module developed was validated by material experts and media experts, consisting of 2 chemistry lecturers and 1 chemistry teacher. The results of this study are 1) The E-module was deemed highly valid, with average scores of 93.43% from material experts and 95.51% from media experts; 2) Students' response to the e-module was very positive with an average score percentage of 90.84%; 3) The increase in chemistry learning outcomes of students who are taught using e-modules is categorized as high marked by an N-Gain value of 0.84.

The Influence of Implementing Problem-Based E-Modules on Students' Motivation And Learning Outcomes on Colloid Systems Chemistry Materials in Senior High School Nainggolan, Fedora Deroly Br; Nainggolan, Bajoka
Jurnal Teknologi Pendidikan : Jurnal Penelitian dan Pengembangan Pembelajaran Vol. 9 No. 2 (2024): April
Publisher : UNDIKMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jtp.v9i2.11204

The research aims to determine the effect of implementing problem-based e-Modules on student motivation and learning outcomes in colloid system material in class XI SMA Negeri 9 Medan. This research method is descriptive quantitative with taking samples from the population by random sampling as many as 60 students as samples (30 students in class XI-2 as experiments and 30 students in class XI-1 as controls). Data was collected through tests and questionnaires, then analyzed using SPSS 24 for Windows with a one-party t-test. The results of the analysis show that students' chemistry learning motivation increased significantly with the implementation of the e-Module, with the average score of the experimental class (71.33%) being higher than the control class (49.00%). This is supported by the results of the one-party t-test which shows a significance value of 0.001 < 0.05. Apart from that, there is a significant influence on students' chemistry learning outcomes, with the experimental class post-test score (79.67) being higher than the control class (74.5) and the one-tailed t-test significance value of 0.031 < 0.05 . Research also shows a positive correlation between motivation and student learning outcomes with a sig value of 0.026 < 0.05, confirming that the application of problem-based e-Modules contributes to improving student chemistry learning outcomes in colloidal systems material.

Pengaruh penerapan e-modul kimia berbasis cooperative learning type NHT pada pembelajaran ikatan kimia kelas X SMA Samosir, Yovanka Melinda; Nainggolan, Bajoka
Educenter : Jurnal Ilmiah Pendidikan Vol. 1 No. 3 (2022): Educenter : Jurnal Ilmiah Pendidikan
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/educenter.v1i3.64

This study aims to (1) find out whether the increase in student learning outcomes with the application of cooperative-based e-modules of the NHT type is higher than the learning of NHT chemistry with student reference teaching materials. (2) find out whether there is an effect of the application of e-modules based on cooperative types of chemistry. NHT on student learning outcomes. This research was carried out at the Harapan Baru Private High School Medan in November-December 2021. From the results of the study, the average pretest score for the experimental class was 36 and the control was 28,167. While the posttest average value of the experimental class was 82,667 and the control class was 77.5. The chemical normalized N-Gain value of the experimental class students was higher than the control class, namely 0.7254> 0.685 or based on the N-Gain percentage, which was 72.54% for the experimental class and 68.5% for the control class. The difference from the increase in learning outcomes from the two classes, namely 4.09%, it can be said that the application of the NHT cooperative-based chemistry e-module with student reference learning media on chemistry. In the hypothesis test, namely the t-test of one party (right side) at a significance level of 0.05, it is obtained that t_count > t_table which is 3,004> 2,002 then Ha is accepted and Ho is rejected. Thus, it can be said that there is an effect of applying cooperative-based chemistry e-modules on student chemistry learning outcomes in chemistry.

Pengaruh penerapan e-modul kimia berbasis cooperative learning type NHT pada pembelajaran ikatan kimia kelas X SMA Samosir, Yovanka Melinda; Nainggolan, Bajoka
Educenter : Jurnal Ilmiah Pendidikan Vol. 1 No. 3 (2022): Educenter : Jurnal Ilmiah Pendidikan
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/educenter.v1i3.64

This study aims to (1) find out whether the increase in student learning outcomes with the application of cooperative-based e-modules of the NHT type is higher than the learning of NHT chemistry with student reference teaching materials. (2) find out whether there is an effect of the application of e-modules based on cooperative types of chemistry. NHT on student learning outcomes. This research was carried out at the Harapan Baru Private High School Medan in November-December 2021. From the results of the study, the average pretest score for the experimental class was 36 and the control was 28,167. While the posttest average value of the experimental class was 82,667 and the control class was 77.5. The chemical normalized N-Gain value of the experimental class students was higher than the control class, namely 0.7254> 0.685 or based on the N-Gain percentage, which was 72.54% for the experimental class and 68.5% for the control class. The difference from the increase in learning outcomes from the two classes, namely 4.09%, it can be said that the application of the NHT cooperative-based chemistry e-module with student reference learning media on chemistry. In the hypothesis test, namely the t-test of one party (right side) at a significance level of 0.05, it is obtained that t_count > t_table which is 3,004> 2,002 then Ha is accepted and Ho is rejected. Thus, it can be said that there is an effect of applying cooperative-based chemistry e-modules on student chemistry learning outcomes in chemistry.

The Effect of Using Interactive E-Module on Student Motivation and Learning Outcomes on Acid-Base Solution Material Simanjuntak, Maria Enjellita; Nainggolan, Bajoka
Jurnal Pendidikan dan Pembelajaran Kimia Vol 12, No 3 (2023): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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

Abstract:The Effect of Using Interactive E-module on Student Motivation and Learning Outcomes on Acid-Base Solution Material . The problem in this study is the low motivation and learning outcomes of chemistry students on acid-base solution material. This study aims to determine the effect of project-based learning (PjBL) model assisted by interactive e-module media on student motivation and learning outcomes at SMAN 7 Medan. The research sample was taken 2 classes with random sampling technique and taught with PjBL model. The treatment in the experimental class was assisted by interactive e-module while the control class was assisted by student packet books. Data collection used test instruments and questionnaires. The results showed that the average learning outcomes of experimental class students were 84.43 with a gain of 68.64% and the control class was 78.71 with a gain of 53.68%. Student learning motivation in the experimental class was 81.71 while in the control class it was 75.29. There is a significant correlation with a medium category between motivation and student learning outcomes of 19.36%. The hyphoteses of this study were accepted, namely there is an effect of the PjBL model assisted by interactive e-module media on student chemistry learning outcomes, student chemistry learning motivation, and there is a correlation between learning motivation and student learning outcomes.Keywords: E-module, Project Based Learning (Pjbl),Learning Outcomes ,Student Motivation,Acid-Base Solution.DOI: 10.23960/jppk.v12.i3.23.04

Pengaruh Model Pembelajaran Inkuiri Terbimbing terhadap Kreativitas dan Hasil Belajar Siswa Kelas VIII MTs Negeri Sibolga pada Materi Getaran dan Gelombang Hasibuan, Siti Fathia Azhar; Nainggolan, Bajoka
JagoMIPA: Jurnal Pendidikan Matematika dan IPA Vol. 5 No. 3 (2025): JagoMIPA: Jurnal Pendidikan Matematika dan IPA
Publisher : Yayasan Pendidikan Bima Berilmu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53299/jagomipa.v5i3.1857

Peneliti melaksanakan studi ini dengan tujuan untuk mengetahui pengaruh model pembelajaran inkuiri terbimbing pada kreativitas dan hasil belajar siswa kelas VIII MTs Negeri Sibolga untuk materi Getaran dan Gelombang. Studi ini memakai metode quasi experimental design dengan dua kelas sampel yang dipilih melalui teknik purposive sampling, yaitu kelas VIII-1 dijadikan kelas eksperimen mempergunakan model pembelajaran inkuiri terbimbing, dan kelas VIII-2 dijadikan kelas kontrol mempergunakan model pembelajaran konvensional. Sehubungan dengan studi ini desain penelitian melibatkan post-test dan pre-test sebagai pengukuran kreativitas dan hasil belajar siswa. Kreativitas siswa diukur menggunakan empat soal uraian yang telah divalidasi dan disusun berdasarkan indikator kreativitas yaitu fluency, flexibility, originality, dan elaboration. Sementara itu, hasil belajar diukur menggunakan 25 soal yang terdiri atas 21 soal pilihan ganda dan 4 soal uraian, disusun berdasarkan indikator taksonomi Bloom. Hasilnya memperlihatkan meningkatnya kreativitas dan hasil belajar siswa secara signifikan. Rata-rata skor kreativitas siswa di kelas eksperimen naik dari 39,20 menjadi 79,83, sedangkan di kelas kontrol mengalami peningkatan dari 38,10 menjadi 69,17. Rata-rata hasil belajar di kelas eksperimen meningkat dari 42,47 menjadi 81,87, sedangkan di kelas kontrol dari 41,23 menjadi 71,93. Uji hipotesis mempergunakan uji-t satu pihak menunjukkan bahwa thitung > ttabel, baik pada variabel kreativitas (4,381 > 1,672) maupun hasil belajar (6,981 > 1,672). Dapat disimpulkan bahwa ditemukan pengaruh secara signifikan dari model pembelajaran inkuiri terbimbing dalam membuat kreativitas serta hasil belajar siswa meningkat.

Pengaruh Penerapan Model Inkuiri Terbimbing Berbasis Video Pembelajaran terhadap Hasil Belajar Siswa Kelas XI Sma pada Materi Laju Reaksi Z Pasaribu, Marisa; Nainggolan, Bajoka
Jurnal Indonesia Sosial Sains Vol. 3 No. 03 (2022): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v3i03.561

This study aims to (1) determine the effect of the application of guided inquiry model based on video learning on improving student learning outcomes. (2) find out whether students' chemistry learning outcomes using instructional video media are higher than students' chemistry learning outcomes taught using powerpoint media. This research was conducted in November-December 2021 at SMA N 1 Sunggal involving experimental class I and experimental class II. The two classes were given different treatment, the experimental class I was given learning using a guided inquiry model and learning videos, the experimental class II was given learning using a guided inquiry model and powerpoint. This research is a quasi-experimental research design with the Nonequivalent control group design model. From the results of the study, the average pretest value of the experimental class I was 43.47 and the average value of the experimental class II was 43.19. After being given treatment, the two classes were then given a posttest to determine learning outcomes, the average posttest score for the experimental class I was 83.33 and the experimental class II was 79.16. The results showed that both classes experienced an increase in learning outcomes, the experimental class I experienced an increase in the value of 39.86 and the experimental class II by 35.19. The N-Gain data for the experimental class I was 71% and the experimental class II was 64%. It can be concluded that the guided inquiry model and learning video media can have an influence on student learning outcomes in the form of increasing learning outcomes.

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