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Jurnal Pendidikan Matematika dan IPA
Published by Universitas Tanjungpura
ISSN : 20860234     EISSN : 25797530     DOI : 10.26418
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Education Mathematics Physics
JPMIPA is a journal publishing the mathematic, biology, chemistry, and physic also natural science mathematic eduacation, biology education, physic education, chemistry education, natural science education.
Arjuna Subject : -
Articles 343 Documents
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SCREENING AND DETERMINATION OF EMULSIFICATION ACTIVITY OF SURFACTANT-PRODUCING BACTERIA FROM PALM OIL INDUSTRY LIQUID WASTE Elsyana, Vida; Alvita, Livia Rhea; Afifah, Dian Ayu; Feladita, Niken; Setiawan, Panji
Jurnal Pendidikan Matematika dan IPA Vol 16, No 2 (2025): May 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i2.90726

Abstract

Biosurfactants are natural surfactants produced by certain microorganisms (bacteria, fungi, and yeast) and are considered the best candidates for replacing synthetic surfactants. Bacteria isolated from oil spill areas have shown the ability to produce biosurfactants. This study enriched bacteria from anaerobic wastewater of palm oil industry in Lampung then isolated and screened natural surfactant-producing bacteria and measured their emulsification activity. Screening of surfactant-producing bacteria was carried out using oil spreading assay and their emulsification activity was measured based on the emulsification index (EI). The results of the study obtained 7 bacterial isolates and all showed positive results in the oil spreading assay. The highest emulsification index (EI) was produced by the fifth isolate (LAC5) with a value of 42.32%. These results show the potential for emulsification activity of biosurfactants produced by anaerobic wastewater bacteria from palm oil industry ponds.
ANALYSIS OF INTERPRETATION ABILITY AND MATHEMATICAL DISPOSITION BASED ON STUDENTS' LEARNING MOTIVATION Nursyahidah, Silmi; Supratman, Supratman; Dewi, Sinta Verawati
Jurnal Pendidikan Matematika dan IPA Vol 16, No 2 (2025): May 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i2.80075

Abstract

This study examines students' mathematical interpretation abilities and dispositions based on their learning motivation levels (high, medium, and low). Employing a qualitative approach with an exploratory method, this research collected data through interpretation ability tests, mathematical disposition and learning motivation questionnaires, and interviews to explore students' perceptions. Data analysis was conducted using the Miles and Huberman model, encompassing data reduction, data presentation, and conclusion drawing. This study, conducted at SMP Negeri 1 Kadugede in class VII K, found characteristic differences based on motivation levels. Students with high motivation demonstrated enthusiasm, resilience, and optimism in mathematics, as well as comprehensive understanding, good representational abilities, and sound conclusion drawing, although their written answers were sometimes inaccurate. Students with medium motivation showed varied achievements, generally possessing sufficient self-confidence, perseverance, interest, and curiosity, capable of understanding problems, representing information, and drawing conclusions, although the accuracy of their writing and the scope of problems solved were still limited. Meanwhile, students with low motivation experienced difficulties in understanding problems, especially complex ones. In conclusion, learning motivation plays a crucial role in strengthening interpretation abilities and forming positive mathematical dispositions, potentially improving student achievement and active participation in mathematics learning.
DEVELOPMENT OF INSTRUCTIONAL MATERIALS TO IMPROVE SKILLS IN OPERATING INTEGERS USING THE ARTICULATE STORYLINE APPLICATION Arizal, Arizal; Suratman, Dede; Yundari, Yundari; Rif'at, Mohammad; Hamdani, Hamdani
Jurnal Pendidikan Matematika dan IPA Vol 16, No 3 (2025): September 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i3.84206

Abstract

This study was conducted to address the low level of students' skills in performing operations with integers. This issue arose because, since the Covid-19 pandemic, many elementary school students have experienced learning loss, which has impacted their learning processes upon entering secondary school. Therefore, to optimize classroom learning time, students were also provided with opportunities for independent learning using interactive instructional materials. This study employed a quantitative development method using the ADDIE model and involved 50 seventh-grade students from SMPN 1 Lembah Bawang and SMPN 3 Lembah Bawang. Data collection techniques included tests and interviews using questionnaires. The collected data were analyzed by comparing pre-test and post-test results, as well as calculating effect size to determine the extent of influence after using the instructional materials. The study resulted in the development of instructional materials validated by experts and shown to improve students' skills in integer operations. After using the developed materials, more than 50% of students demonstrated high proficiency in operating integers, compared to 66% who had low proficiency beforehand. The resulting effect sizes after using the instructional materials were categorized as medium (d = 0.7) and high (d = 1.0). It can thus be concluded that the developed instructional materials effectively enhance students"™ skills in performing integer operations and are suitable for production and use in secondary schools.
DEVELOPMENT OF AUDIOVISUAL MEDIA "DIGESTOPIA" BOARD GAME TO ENHANCE PROBLEM-SOLVING SKILLS AND COGNITIVE LEARNING OUTCOMES OF HIGH SCHOOL STUDENTS Febriyanti, Riska Dwi; Al-Muhdhar, Mimien Henie Irawati; Hassan, Zainudin; Setiawan, Deny; Sumberartha, I Wayan; Wulandari, Nuning; Yuhanna, Wachidatul Linda; Fanani, Zainal
Jurnal Pendidikan Matematika dan IPA Vol 16, No 3 (2025): September 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i3.93311

Abstract

Students at SMAN 1 Singosari continue to demonstrate limited problem-solving skills and cognitive learning outcomes, partly due to contextually irrelevant media and reliance on LCD projectors. This study aimed to evaluate the validity and practicality of "Digestopia", an audiovisual, website-assisted electronic board game developed using the RICOSRE model (Reading, Identifying problem, Constructing solution, Solving the problem, Reviewing the problem solving, and Extending problem solution) and integrated with the SDGs' Zero Hunger initiative (Sustainable Development Goal 2: Zero Hunger). The development process adopted the Lee and Owens instructional design model, which consists of four stages: analysis, design, development, and evaluation. Data were collected using expert validation sheets and student response questionnaires and analyzed using descriptive quantitative techniques to determine the average scores. The results showed that "Digestopia" was valid (90.6%) and practical (86.7%) for classroom use, indicating its potential as an interactive learning tool.
STUDENTS' MATHEMATICAL REPRESENTATION ABILITY IN SOLVING INTEGRATION LITERACY PROBLEMS Hakim, Wildan; Sulthoni, Annanda Shofi
Jurnal Pendidikan Matematika dan IPA Vol 16, No 3 (2025): September 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i3.92393

Abstract

This study aims to describe students' mathematical representation ability in solving literacy integration problems. The description is based on indicators of mathematical representation, namely verbal representation, pictorial representation, and symbolic representation. This research used a qualitative descriptive approach and was conducted on class VIII students totaling 28 students. Of these, three students were selected as research subjects who represented high, medium, and low ability categories, using purposive sampling technique. Data were collected through mathematical representation test sheets and interviews. The results showed that students with high mathematical representation ability could use all three forms of representation effectively, while students with moderate ability tended to be inconsistent in using representations that only met 2 indicators. Meanwhile, low ability students had difficulty in connecting representations and needed additional guidance on all indicators. These findings highlight the importance of problem-based learning and interactive media to improve students' mathematical representation ability. Further research is recommended to analyze the relationship between reading literacy and mathematical representation and develop literacy-based learning models to be better implemented at various levels of education.
TEACHER INTERVENTION STRATEGIES TO DEVELOP STUDENTS' ARGUMENTATION IN SOCIOSCIENTIFIC ISSUES LEARNING IN MULTI-LEVEL CLASSES Alma'ruf, Jamus; Faizah, Ulinnuha Nur; David, Martinez
Jurnal Pendidikan Matematika dan IPA Vol 16, No 3 (2025): September 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i3.93801

Abstract

Scientific argumentation skills are essential skills in 21st-century learning, especially in dealing with complex socioscientific issues. However, the diversity of students' abilities in multilevel classes often poses a challenge in designing inclusive learning. This study explores the role of teacher interventions in developing students' argumentation skills related to socioscientific issues in multilevel classes. Using a case study design with mixed approach methods), this study involved 7th-grade students from public junior high schools and 8th-grade students from religious-based junior high schools in Ponorogo city and involved 2 teachers who taught in their classes. Interventions based on Toulmin's argumentation structure and socioscientific issues were conducted to improve students' abilities in tiered classes. The results showed that although there was no significant increase in students' argumentation understanding based on pre-test and post-test scores, there was a significant increase in students' argumentation levels. Teachers succeeded in creating a supportive learning environment through contextual approaches, group discussions, and scaffolding, which effectively improved students' argumentation skills in tiered classes. Constraints such as time constraints, language barriers, and access to technology were identified as factors that influenced learning outcomes in developing students' argumentation skills. This study emphasizes the importance of planned teacher intervention strategies to support students' argumentation development in tiered classes with varying student ability levels.
GLOBAL WARMING PHENOMENON IN PIAAC FRAMEWORK-BASED E-MODULE: SUSTAINABLE SCIENCE LEARNING TOOL FOR SENIOR HIGH SCHOOL STUDENTS IN PALEMBANG Alshah, Putri Herdiyanti; Saparini, Saparini; Kurdiati, Lintang Auliya; Andriani, Nely
Jurnal Pendidikan Matematika dan IPA Vol 16, No 3 (2025): September 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i3.91872

Abstract

This study aims to develop a valid and practical PIAAC Framework-based Learning E-Module on global warming material for senior high school. This E-Module is designed not only to convey knowledge about global warming, but also to train literacy, numeracy, and problem solving which are very important in the 21st century. This study used the development research approach by following the flow of the Rowntree Development model and using Tessmer's formative evaluation stages, namely self-evaluation, expert review, one-to-one evaluation, and small group evaluation. The evaluation results show that the E-Module obtained a validity score of 97.96% from the expert, which is included in the very valid category. In addition, the results of one-to-one evaluation and small group evaluation showed a score of 91% and 90.77%, which is included in the very practical category. This research is expected to make a positive contribution in learning about global warming and increasing students' awareness of environmental issues, as well as providing flexible learning alternatives that can be accessed through digital devices.
THE INFLUENCE OF THE GUIDED INQUIRY LEARNING MODEL ON STUDENTS"™ MATHEMATICAL REFLECTIVE THINKING ABILITY Lorenza, Dela Alifa; Nurhanurawati, Nurhanurawati; Setiawati, Santy
Jurnal Pendidikan Matematika dan IPA Vol 16, No 3 (2025): September 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i3.93414

Abstract

Mathematical reflective thinking ability is a thinking ability that involves the process of connecting existing knowledge with new knowledge to solve problems by identifying problems, evaluating, concluding, and making decisions to find the best solution to the problems faced. Mathematical reflective thinking ability has an important role for teachers and students in mathematics learning that focuses on problem solving. However, in reality, many students still have difficulty reflecting on their thinking processes when solving mathematical problems. Therefore, it is necessary to implement a learning model that actively involves students in activities and focuses on solving mathematical problems, one of which is the guided inquiry model. The purpose of this study was to determine the effect of the Guided inquiry learning model on students' mathematical reflective thinking abilities. The research method used was a quasi-experimental study. The population in this study were all eighth-grade students of SMP Negeri 7 Bandar Lampung in the even semester of the 2024/2025 academic year with a sample of 30 students in grades VIII.8 and VIII.9 selected using a purposive sampling technique. The research design used was a posttest only control group design. The data in this study were quantitative data obtained from a mathematical reflective thinking ability test. Data analysis in this study used a statistical test, namely the t-test. The results showed that the mathematical reflective thinking ability of students who followed the guided inquiry learning model was higher than the mathematical reflective thinking ability of students who followed conventional learning. Thus, the guided inquiry learning model influenced students' mathematical reflective thinking ability.
EXPLORATION OF INDIGENOUS BACTERIA WITH POTENTIAL FOR TOTAL AMMONIA NITROGEN DEGRADATION FROM RUBBER WASTEWATER AND PHYLOGENETIC TREE CONSTRUCTION BASED ON 16S rRNA GENE SEQUENCES Melinda, Annisa; Febria, Fuji Astuti; Tjong, Djong Hon
Jurnal Pendidikan Matematika dan IPA Vol 16, No 3 (2025): September 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i3.93436

Abstract

Rubber wastewater contains total ammonia nitrogen (TAN) at levels that can potentially cause pollution if discharged into water bodies without proper treatment. TAN content is one of the commonly used parameters for assessing water quality. Certain groups of bacteria are capable of naturally degrading TAN in the environment. This study aimed to isolate bacteria from rubber wastewater, evaluate their potential to degrade TAN, and identify the most effective isolate at the molecular level. Samples were collected from wastewater treatment ponds using random purposive sampling based on specific criteria. A survey method was used to determine sampling locations, while experimental methods were applied in the laboratory. Bacterial isolation was conducted using the serial dilution technique, followed by inoculation with the pour plate technique. Pure isolates were obtained using the streak plate technique. The degradation potential of the bacterial isolates was tested by inoculating 10% v/v of each isolate into 200 mL of rubber wastewater, followed by incubation at room temperature for six days. TAN levels were analyzed using the phenate method with a spectrophotometer, following the Indonesian National Standard SNI 06-6989.30-2005. Three bacterial isolates (NS-1, NS-2, and NB-1) were obtained from the rubber wastewater. All three isolates demonstrated potential in reducing TAN levels, with final TAN concentrations after incubation ranging from 6.75 to 4.8 mg/L, corresponding to a reduction of 52.50"“66.90%. The most effective isolate in reducing TAN was NS-2. Molecular identification using the PCR-seq method of the 16S rRNA gene revealed that isolate NS-2 showed 99.86"“99.93% sequence identity with Enterobacter sp. This study provides a basis for the development of bioremediation technologies for rubber wastewater treatment to improve aquatic environmental quality.
VALIDITY AND EFFECTIVENESS OF ETHNOSCIENCE-BASED CHEMISTRY LEARNING MATERIALS ON REDOX AND CHEMICAL NOMENCLATURE TO ENHANCE STUDENTS"™ SCIENTIFIC LITERACY AND CRITICAL THINKING SKILLS Wahyuni, Sri; Novita, Mega; Hayat, Muhammad Syaipul
Jurnal Pendidikan Matematika dan IPA Vol 16, No 3 (2025): September 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v16i3.92464

Abstract

This study aims to develop and test the validity and effectiveness of ethnoscience-based chemistry learning devices on redox material and chemical compound nomenclature to improve science literacy and critical thinking skills of students. This research uses the 4D development model (Define, Design, Develop, Disseminate). The learning devices developed include teaching modules, learning materials, and student worksheets. The research subjects were 34 class XII students at MAN Wonogiri. The findings show that: (1) The learning devices were declared very valid by expert validators with scores of 91.15% for teaching modules, 91.82% for LKPD, 93.20% for teaching materials, and 22.5 (scale 25) for question instruments, (2) Practitioner validators also declared the devices very valid with scores of 90.72% for teaching modules, 92.73% for LKPD, 94.00% for teaching materials, and 23.5 (scale 25) for question instruments, (3) The reliability and validity tests showed Cronbach Alpha values of 0.749 and 0.921 for science literacy and critical thinking instruments respectively, (4) The learning devices are effective with N-gain values of 0.6103 for science literacy and 0.6501 for critical thinking skills, both in moderate category. The ethnoscience-based learning tools developed are valid and effective to improve students' science literacy and critical thinking skills.

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