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All Journal (JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Indonesian Journal of Research and Educational Review (IJRER) Lemma: Letters of Mathematics Education
Hulukati, Evi P.
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Religion Arts Humanities Chemistry Education Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Other

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Mathematical Reasoning Ability of Junior High School Students: Application of Discovery Learning Model Mokoginta, Andika Prasetyo; Hulukati, Evi P.; Kobandaha, Putri Ekawaty
ETDC: Indonesian Journal of Research and Educational Review Vol. 4 No. 3 (2025): June
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v4i3.2951

Abstract

Mathematical reasoning ability is necessary for solving mathematical problems. Therefore, the intent of this study is to enhance students' mathematical reasoning ability through the application of a discovery learning model focused on quadratic function material. This research is Classroom Action Research, designed by Kemmis and McTaggart. The research subjects were 32 students of grade IX at Public Junior High School 1 Tapa. This study used tests for mathematical reasoning, teacher and student activity observation sheets, and questionnaires. The data was analyzed quantitatively and qualitatively using percentages. The findings of this study indicate an increase in students' mathematical reasoning ability after applying the discovery learning model. Teacher activities in cycle I with a percentage of 73.68% increasing in cycle II to 89.47%; student activities in cycle I with a percentage of 72.50% increasing in cycle II to 87.50%; questionnaire results in cycle I only 20 people with a percentage of 62.50% increasing in cycle II to 28 people with a percentage of 87.50%; and the results of students' reasoning ability in cycle I only 23 people with a percentage of 71.87% increasing in cycle II to 28 people with a percentage of 90.62%. There were still 4 people with a percentage of 9.28% who scored <75. In cycle II, the teacher activities, student activities, questionnaires, and reasoning skills met the success indicators.
The Effect of Problem-Based Learning Model on Students’ Learning Outcomes: A Case on Central Tendency Measures Ainurrohimah, Syarifah; Hulukati, Evi P.; Irfah, Auli
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol. 8 No. 2 (2025): VOLUME 8 NUMBER 2, JUNE 2025
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jiml.v8i2.28069

Abstract

This study investigates the low academic performance of eighth-grade students at SMP Negeri 2 Telaga, with an average score of 50.1. Effective learning requires the application of appropriate teaching models to foster active student participation and improve outcomes. The purpose of this research is to determine the difference in student achievement between those taught using the Problem-Based Learning (PBL) model and those taught through Direct Instruction, specifically on the topic of measures of central tendency. A quantitative approach was used with a Posttest-Only Control Group Design. The sample consisted of 16 students in the experimental group and 15 in the control group. Data were analyzed using both descriptive and inferential statistics. Descriptive analysis included measures such as mean, mode, median, variance, and standard deviation. Inferential analysis was conducted to test the normality and homogeneity of the data before performing hypothesis testing.The findings reveal that the average posttest score of students taught with the PBL model was higher than that of students taught using direct instruction. This difference was supported by a hypothesis test result of 555 at a 0.05 significance level and an effect size of 1.043, indicating a high level of impact.These results suggest that the Problem-Based Learning model significantly improves student learning outcomes in the topic of measures of central tendency for eighth-grade students at SMP Negeri 2 Telaga.
The Implementation of Polya’s Strategy with Lumio Media to Enhance Students’ Mathematical Problem-Solving Skills on Junior High School Hanifa; Hulukati, Evi P.; Isa, Dewi Rahmawaty
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol. 8 No. 2 (2025): VOLUME 8 NUMBER 2, JUNE 2025
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jiml.v8i2.28055

Abstract

Mathematics is a fundamental discipline that plays an important role in developing students' logical, analytical, and systematic thinking skills. However, many students still struggle with solving non-routine mathematical problems due to a reliance on memorization and teacher-centered learning. This study aims to improve students’ mathematical problem-solving ability, especially in probability, through the implementation of Polya’s problem-solving steps assisted by Lumio interactive media. This classroom action research employed the Kemmis and McTaggart model, consisting of planning, action, observation, and reflection stages conducted over two cycles. The research subjects were 12 eighth-grade students from SMP Muhammadiyah Kwandang. Data were collected through tests and observation sheets, then analyzed both quantitatively and qualitatively. The instruments included essay tests based on probability story problems and validated observation sheets for teacher and student activities. The results showed a significant improvement in students’ problem-solving skills. The average score increased from 70.05% in the first cycle to 83.59% in the second cycle. The proportion of students achieving mastery also rose from 33% to 91.7%. Learning activities became more interactive and student-centered. It is concluded that integrating Polya’s strategy and Lumio media is effective in enhancing students’ mathematical problem-solving skills and active learning engagement.
PENGARUH PENGGUNAAN MEDIA ULAR TANGGA MELALUI MODEL GAME BASED LEARNING (GBL) TERHADAP HASIL BELAJAR SISWA KELAS VII DI SMP NEGERI 2 TELAGA Abdullah, Iwintry Windia; Hulukati, Evi P.; Achmad, Novianita
JURNAL LEMMA Vol 12, No 1 (2025): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2025.v12i1.10475

Abstract

Penelitian ini meneliti pengaruh penggunaan media Ular dan Tangga melalui model Game-Based Learning (GBL) terhadap hasil belajar siswa dalam materi bilangan bulat di SMP Negeri 2 Telaga. Penelitian ini menerapkan metode kuasi-eksperimental dengan desain kelompok kontrol pretest-posttest. Kelas eksperimen (27 siswa) diajarkan menggunakan media Ular dan Tangga, sedangkan kelas kontrol (26 siswa) menggunakan media PowerPoint. Data dikumpulkan melalui pre-test dan post-test dalam bentuk pertanyaan esai, yang sebelumnya divalidasi dan diuji keandalannya. Hasil penelitian mengungkapkan peningkatan hasil belajar siswa di kelas eksperimen yang signifikan, dengan rata-rata nilai pasca tes 92 dibandingkan dengan 75,67 di kelas kontrol. Ukuran efek (d Cohen = 1,749) menunjukkan tingkat pengaruh yang tinggi. Temuan ini menunjukkan bahwa penggunaan media Ular dan Tangga melalui model GBL secara efektif meningkatkan motivasi, keterlibatan, dan pemahaman siswa tentang konsep bilangan bulat. Oleh karena itu, media ini dapat dianggap sebagai alternatif yang inovatif dan menyenangkan dalam pembelajaran matematika
Co-Authors Abdullah, Iwintry Windia Ainurrohimah, Syarifah Auli Irfah Dewi Rahmawaty Isa Hanifa Kobandaha, Putri Ekawaty Mokoginta, Andika Prasetyo