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All Journal Jurnal Pelita Pendidikan Jurnal Florea Jurnal Pendidikan Sains dan Teknologi Terapan
Marlinda Nilan Sari Rangkuti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Languange, Linguistic, Communication & Media Library & Information Science Social Sciences

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FREQUENCY ANALYSIS AND EVALUATION OF THE IMPLEMENTATION OF CLASS X BIOLOGY PRACTICES IN SENIOR HIGH SCHOOL Nadia Vermoni Suci; Khairiza lubis; Marlinda Nilan Sari Rangkuti
Jurnal Pelita Pendidikan Vol 9, No 3 (2021): Jurnal Pelita Pendidikan
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpp.v9i3.22404

Abstract

This study aims to determine students' frequency, evaluation, and perceptions on the implementation of practicum in SMA Negeri in Rantauprapat City. The sample in this study were 3 teachers and students of class X MIA at SMA Negeri 1 Rantau Utara, SMA Negeri 2 Rantau Utara and SMA Negeri 1 Rantau Selatan totaling 107 people taken by random sampling. The data analysis technique used is a quantitative descriptive analysis technique, which describes and explains the data based on the field. This research is an explorative survey, namely by observing, interviewing, and exploring. The analysis results show that the average frequency of practicum implementation is 66%, which is quite often done. The laboratory conditions in the three sample schools were classified as very good (83.18%). The student interest in laboratory activities is also classified as very good (86.14%), but some schools, namely SMA Negeri 1 Rantau Utara and SMA Negeri 2 Rantau Utara, experienced problems in the time of practicum implementation (70.44%). The preparation and implementation of the practicum have been carried out very well (88.07%), with 83.90% of reports and evaluations carried out for each practicum activity. However, although it is classified as very good, the average evaluation value is only 59.60, which is quite enough.
THE EFFECT OF PROCESS ORIENTED GUIDED INQUIRY LEARNING MODEL ON STUDENT LEARNING OUTCOMES IN CLASS XI MATERIALS Elna Farlita Mendrofa; Marlinda Nilan Sari Rangkuti; Wasis Wuyung Wisnu Brata
Jurnal Pelita Pendidikan Vol 10, No 4 (2022): Jurnal Pelita Pendidikan
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpp.v10i4.45359

Abstract

This research was motivated by the difficulties students face in understanding the material on cells. Specifically, 70% of the students' learning outcomes in cell material did not meet the Minimum Completeness Criteria, indicating a need for improvement in the learning process. To address this, innovative learning models were implemented. The study utilized a quasi-experimental design with a pretest and posttest control group design. The research sample was selected using purposive sampling techniques, resulting in two classes: Class XI MIPA 5 (Experimental Class) where the POGIL learning model was applied, and Class XI MIPA 6 (Control Class) where the conventional learning model was used. Data collection involved administering a test consisting of 20 multiple-choice questions. The mean scores for the control class were 37.91 and 67.63. Data analysis was conducted using the Paired Sample t-Test with SPSS Version 21 software. The results of the hypothesis testing revealed that the POGIL learning model had a significant effect on student learning outcomes in cell material for Class XI MIPA SMA N 12 Medan T.P. 2022/2023. The N-gain value for the experimental class was 0.71, falling within the high category, while the control class had an N-gain value of 0.46, categorizing it as medium. This indicates that the POGIL learning model had a greater impact on student learning outcomes in cell material for Class XI MIPA SMA N 12 Medan T.P. 2022/2023.
Test of Preservative Content and Detection of Salmonella Sp. Bacterial Contamination in Salted Mackerel Meat (Rastrelliger Kanagurta) Sold at Pasar Galang, Deli Serdang Regency Yulia Indriani; Marlinda Nilan Sari Rangkuti
Jurnal Pendidikan Sains dan Teknologi Terapan | E-ISSN : 3031-7983 Vol. 1 No. 4 (2024): Oktober - Desember
Publisher : CV.ITTC INDONESIA

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Abstract

This research aims to determine the content of chemical preservatives such as formalin and borax, as well as detecting bacterial contamination of Salmonella sp. on salted mackerel fish sold at Galang Market. Formalin is detected using Potassium Permanganate (KMnO4) reagent, while borax is tested using H2SO4 reagent. To detect Salmonella sp. contamination, the test method is carried out using selective Salmonella Shigella Agar (SSA) media. The results of the research showed that the salted mackerel fish sold at Galang Market contained negative borax, this was indicated by the absence of changes in flame color that occurred on the porcelain cup during testing. The formalin content test of the three salted mackerel fish showed positive results for formalin content, this was indicated by a change in color to clear in the test tube. The results of the formalin level test in the first salted mackerel fish had a level of 1.61 mg/g, the second salted mackerel fish had a level of 1.55 mg/kg and the third salted fish had a formalin level of 1.65 mg/kg, already exceeding the acceptable tolerance threshold. accepted by the adult body. Salmonella sp. bacterial contamination test. The three salted mackerel fish tested produced negative results, indicating that the salted mackerel fish at Galang Market were free from Salmonella sp contamination.
The Effect of the Problem Based Learning (PBL) Model on Student Activities and Learning Outcomes on Excretory System Materials in Grade VIII of SMP Negeri 2 Percut Sei Tuan Heni Nathali Rosa Sibarani; Marlinda Nilan Sari Rangkuti
Jurnal Pendidikan Sains dan Teknologi Terapan | E-ISSN : 3031-7983 Vol. 1 No. 4 (2024): Oktober - Desember
Publisher : CV.ITTC INDONESIA

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Abstract

This study aims to determine the effect of problem-based learning (PBL) model on students' activities and learning outcomes on human excretory system material in class VIII SMP Negeri 2 Percut Sei Tuan. This research uses quantitative methods with a pseudo-experimental approach. The research design used was non-equivalent control group. The study population included all VIII grade students of SMP Negeri 2 Percut Sei Tuan, consisting of 11 classes. The research sample was selected using purposive sampling technique, class VIII-6 as the experimental class and class VIII-7 as the control class. The average pre-test and post-test data of cognitive abilities in the experimental class were 33.6 and 83 and in the control class were 33.8 and 78.3. Based on hypothesis testing, for the experimental class and control class obtained tcount = 4.1308 and ttable = 2.0017, then tcount > ttable. The results of observations of student activity from meeting one to meeting three have increased, in the experimental class is 63.62% and in the control class is 58.73%, it is concluded that there is an effect of the problem-based learning (PBL) model on student activity and learning outcomes on the material of the human excretory system.
Analysis of Student Learning Difficulties in Human Movement System Material Febri Ulina Feronika Girsang; Marlinda Nilan Sari Rangkuti
Florea : Jurnal Biologi dan Pembelajarannya Vol. 13 No. 1 (2026)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/florea.v13i1.23397

Abstract

This study aims to determine students' learning difficulties and the factors causing these difficulties in learning the human movement system material for Class XI at SMA Negeri 1 Silimakuta. The research population was all Class XI students who studied biology. The sample was taken using Purposive Sampling, and the method used was descriptive quantitative. The instruments used in this study were essay tests and questionnaires. Data were analyzed using a percentage technique. The results showed that:(1) The percentage of student learning difficulties at the cognitive level for knowledge (C1) questions was 50.69%, comprehension (C2) was 63.75%, application (C3) was 58.84%, analysis (C4) was 57.08%, evaluation (C5) was 67.43%, and creation (C6) was 74.44%.(2) Furthermore, the first indicator was 62,96%, the second indicator was 59,72%, the third indicator was 61,06 %, and the fourth indicator was 61.34%. (3) The factors influencing student learning difficulties were examined from both internal and external aspects. The internal factors included: interest at 76.59%, motivation at 79.99%, intelligence at 73.04%, and attention at 74.63%. The external factors included: books at 72.61%, media at 70.97%, teacher's teaching methods at 76.49%, and facilities and infrastructure at 73.83%.
Co-Authors Brata, Wasis Wuyung Wisnu Elna Farlita Mendrofa Febri Ulina Feronika Girsang Heni Nathali Rosa Sibarani Khairiza Lubis Nadia Vermoni Suci Yulia Indriani