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ANALISIS TARIF PELAYANAN JASA PELABUHAN (STUDI KASUS PELABUHAN TANJUNG PERAK SURABAYA) Putri, Indah Ayu Johanda; Harini, Novita Vindri
Publik: Jurnal Manajemen Sumber Daya Manusia, Administrasi dan Pelayanan Publik Vol. 12 No. 1 (2025): Publik: Jurnal Manajemen Sumber Daya Manusia, Administrasi, dan Pelayanan Publ
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37606/publik.v12i1.1638

This study aims to analyze the determination of service tariffs at Tanjung Perak Port using a Mixed Method approach. Data were collected through observations, perception surveys, and interviews. The results show that service tariffs are influenced by several factors, such as the type of service (e.g., loading/unloading, anchoring, storage), the volume and type of goods, and policies set by the port authority. The tariff components include loading/unloading, anchoring, storage, administration, and other charges. A comparison of tariffs with other nearby ports indicates that Tanjung Perak's tariffs can be more competitive depending on each port’s policies. According to the survey, 82.4% of service users were satisfied with the provided services, 76.6% felt the quality matched the price, and 64.7% considered the tariff details important. This study highlights that port service tariffs at Tanjung Perak significantly influence user satisfaction and the port's competitiveness.

Mathematical Challenges in Biology: Identifying Core Learning Difficulties Harini, Novita Vindri
Discovery Vol 10 No 1 (2025): March 2025
Publisher : LPPM Universitas Hasyim Asy'ari Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33752/discovery.v10i1.8702

Biology students often face difficulties in understanding basic mathematical concepts, which can impact their comprehension of advanced science courses. This study aims to identify the key mathematical topics that pose challenges for first-year biology students to facilitate instructional improvements before the final exam. The research involved an analysis of midterm exam results from 90 students enrolled in a Basic Mathematics course. The data examined included completion time and accuracy rates across six key topics: equations and inequalities, matrices, absolute value, real numbers, probability, and sets. The results indicated that probability had the longest average completion time (4 minutes 36 seconds), while absolute value had the highest error rate, with only 13.19% correct responses. Further interviews revealed that students struggled with understanding the formal concept of absolute value and often misapplied probability rules for independent events. These findings highlight the need for improved teaching strategies, particularly for topics with high error rates, such as concept-based approaches and more structured problem-solving exercises. Enhancing students' mathematical proficiency through targeted interventions is expected to better prepare them for future academic challenges.

Mathematical Challenges in Biology: Identifying Core Learning Difficulties Harini, Novita Vindri
Discovery Vol 10 No 1 (2025): March 2025
Publisher : LPPM Universitas Hasyim Asy'ari Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33752/discovery.v10i1.8702

Biology students often face difficulties in understanding basic mathematical concepts, which can impact their comprehension of advanced science courses. This study aims to identify the key mathematical topics that pose challenges for first-year biology students to facilitate instructional improvements before the final exam. The research involved an analysis of midterm exam results from 90 students enrolled in a Basic Mathematics course. The data examined included completion time and accuracy rates across six key topics: equations and inequalities, matrices, absolute value, real numbers, probability, and sets. The results indicated that probability had the longest average completion time (4 minutes 36 seconds), while absolute value had the highest error rate, with only 13.19% correct responses. Further interviews revealed that students struggled with understanding the formal concept of absolute value and often misapplied probability rules for independent events. These findings highlight the need for improved teaching strategies, particularly for topics with high error rates, such as concept-based approaches and more structured problem-solving exercises. Enhancing students' mathematical proficiency through targeted interventions is expected to better prepare them for future academic challenges.

Critical Thinking in Solving Two-Variable Equation Word Problems: A Case Study by Gender Identity Nuriati, Esti; Siswono , Tatag Yuli Eko; Harini, Novita Vindri
Jurnal Pendidikan Matematika Vol. 16 No. 2 (2025): July 2025
Publisher : Jurusan Pendidikan Matematika FKIP Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jpm.v16i2.296

Junior high school students' critical thinking in solving systems of linear equations often exhibits weaknesses, particularly in assessment and reasoning stages, which may hinder deep algebraic understanding. This study analyses students' critical thinking abilities according to Facione's indicators and explores how gender identity, measured through the Bem Sex Role Inventory, influences these patterns. This research contributes novel insights by systematically examining the intersection of critical thinking development and gender identity in algebraic problem-solving contexts. A descriptive case study methodology employed purposive sampling of four ninth-grade students at a junior high school in East Java, classified as masculine male, feminine male, masculine female, and feminine female based on BSRI scores. Data were collected through written tests, semi-structured interviews, observations, and documentation, then triangulated in analysis. Findings revealed distinct patterns: masculine males excelled in analysis and reasoning but lacked assessment skills; feminine males showed strong comprehension and articulation yet weak reasoning; masculine females demonstrated proficiency in analysis and assessment with less systematic explanations; and feminine females exhibited strong comprehension and articulation but limited analytical abilities. This study provides the first comprehensive framework linking gender identity profiles with critical thinking patterns in mathematical problem-solving, offering evidence-based guidance for developing inclusive instructional strategies in junior high mathematics.

The Analyzing Creative Thinking Skills of Junior High School Students in Solving Mathematical Problems with AI Assistance Fauzi, Habibillah Achmad Putra; Siswono, Tatag Yuli Eko; Harini, Novita Vindri
MATHEdunesa Vol. 14 No. 3 (2025): Jurnal Mathedunesa Volume 14 Nomor 3 Tahun 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathedunesa.v14n3.p687-703

This study analyzed the creative thinking ability of junior high school students in solving mathematics problems with the help of Artificial Intelligence (AI). The research employed a qualitative case study approach with three ninth-grade students of varying mathematical abilities (high, medium, and low). Data were collected through tests, observations, and interviews, then analyzed based on creative thinking indicators: fluency, flexibility, originality, and elaboration. The results showed that students' creative thinking skills were in line with their level of mathematical ability, where students with high mathematical ability were able to solve problems using unique approaches and detailed steps. However, there were minor errors in the conclusions. Students with moderate math abilities can use two different strategies, but they are still affected by AI solutions. Students with low math abilities tend to rely on AI-generated answers without modification. This study concludes that students' creative thinking ability is influenced by their conceptual understanding and how they utilize AI. Teachers need to guide students to use AI as an exploration tool, not just a source of answers.

Pelatihan Matematika Guru SD Kabupaten Mojokerto dalam Menghindari Miskonsepsi dan Menguatkan Numerasi Harini, Novita Vindri; Sulaiman, Raden; Yunianti, Dwi Nur; Soemarsono, Annisa Rahmita; Damayanti, Nia Wahyu; Hakim, Ahmad Rohman
Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Vol 8, No 4 (2025): Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstormin
Publisher : Politeknik Harapan Bersama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/japhb.v8i4.9638

Miskonsepsi pada konsep dasar matematika (seperti bilangan dan geometri) di sekolah dasar dapat menghambat perkembangan numerasi siswa. Kegiatan pengabdian ini bertujuan memperkuat kompetensi matematika guru SD di Kabupaten Mojokerto agar mampu mengidentifikasi dan meminimalisir miskonsepsi, sekaligus menguatkan keterampilan numerasi. Pelatihan dilaksanakan pada 26 Juli 2025 di SD Banjar Agung 1, diikuti 25 guru dari berbagai kecamatan. Metode kegiatan meliputi penyampaian materi, diskusi interaktif, studi kasus miskonsepsi, dan tes kompetensi menggunakan platform Quizizz. Evaluasi dilakukan melalui tes kompetensi, angket, dan tugas refleksi. Hasil tes kompetensi menunjukkan 63,64% peserta mencapai ketuntasan dengan rata-rata nilai 82 dari 100, sedangkan refleksi guru mengungkap miskonsepsi yang sering terjadi pada materi pecahan, geometri, dan nilai tempat bilangan. Angket evaluasi memperlihatkan peningkatan pemahaman guru terkait strategi numerasi kontekstual yang dapat diterapkan di kelas. Dengan demikian, program ini terbukti menguatkan pengetahuan konseptual dan keterampilan pedagogis guru, yang berpotensi berdampak positif pada pembelajaran matematika di sekolah dasar.

Design Contextual Problems and Solutions Related to Linear Programming Topics with The Help Of Geogebra Harini, Novita Vindri
Noumerico: Journal of Technology in Mathematics Education Vol. 2 No. 2 (2024): Noumerico, September 2024
Publisher : Universitas Islam Tribakti Lirboyo Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33367/jtme.v2i2.5914

This preliminary research will be conducted at the beginning of the operations research course. Operations research is an extension of the topic of linear programming mathematics that is taught in high school. This research aims to describe the results of the work of operations research class students regarding how to design contextual problems and solve them using GeoGebra’s help. This research uses a qualitative approach, namely through in-depth observation of the results of student work on worksheets. After data analysis, it was found that in designing problems, students could produce realistic contextual problems using two variables and a single optimum solution type. Interestingly, they use contexts that are very close to current world trends, for example, Korean boy bands, culinary delights, types of flower arrangements, and so on. Meanwhile, in the solution process, using GeoGebra has proven to facilitate problem-solving by implementing the strategy and checking the results. They use the probe concept to find the optimum solution, and GeoGebra dramatically speeds up the process

The effectiveness of media on distance learning based on Merrill's Taxonomy and CASR 147 Rifai, Moch; Harini, Novita Vindri
Jurnal Pendidikan Vokasi Vol. 12 No. 3 (2022): November
Publisher : ADGVI & Graduate School of Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpv.v12i3.49144

According to Merrill, there are two dimensions of learning objectives: content and performance. For learning to achieve its goals, suitable media is needed. Moreover, the Covid-19 pandemic situation since 2019 requires learning to be distanced. Teachers and students must work together to achieve learning objectives. Several media can support learning, including text formats, audio/video tutorials, interactive multimedia, and simulator software. Especially for Aviation Vocational education which has a learning level guide at CASR 147, further analysis is needed on how these media can effectively achieve learning objectives. So, this study aims to analyze the effectiveness of media in distance learning based on Merrill's Taxonomy and CASR 147. Quantitative research methods are used with data from questionnaires and several interviews for data triangulation needs. Based on its effectiveness, the following are suggestions of learning media that can be used: audio/video tutorials, simulators, interactive multimedia, and text formats. Furthermore, it is necessary to conduct research that discusses media preferences based on students' learning styles to know the reasons for the results of media selection by students through questionnaires.

Computational Thinking Abilities of Vocational School Students in Solving Quadratic Function Problems Using Python Programming Language Putra, Misel Rajasyah Hadi; Siswono, Tatag Yuli Eko; Harini, Novita Vindri
MATHEdunesa Vol. 14 No. 3 (2025): Jurnal Mathedunesa Volume 14 Nomor 3 Tahun 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathedunesa.v14n3.p780-804

The Indonesian Minister of Education and Culture implemented the Merdeka Belajar Kampus Merdeka Curriculum in 2019, emphasizing computational thinking (CT) as a crucial 21st-century skill. Despite its importance in mathematics education, most Indonesian mathematics learning has not been oriented toward developing computational thinking abilities. Vocational school students majoring in Software Engineering possess programming knowledge that could potentially enhance their mathematical problem-solving through computational approaches. However, the extent of their CT abilities when applied to mathematical contexts remains unclear. This study aims to describe and analyze the computational thinking abilities of 10th-grade vocational school students majoring in Software Engineering when solving quadratic function problems using Python programming language. This qualitative research employed a case study approach with three purposively selected students representing different proficiency levels (high, moderate, and low) based on standardized programming and mathematics assessment criteria. Data were collected through written tests, structured observations, and semi-structured interviews. The assessment focused on four CT components: decomposition, pattern recognition, abstraction, and algorithmic thinking. The analysis revealed distinct patterns in CT abilities across proficiency levels. High-proficiency students (S1) demonstrated systematic problem decomposition, optimal pattern utilization, effective information filtering, and efficient algorithm development, achieving an average CT score of 91.25. Moderate-proficiency students (S2) showed adequate CT abilities with some limitations in systematic organization and strategic thinking, scoring 78.75 on average. Low-proficiency students (S3) exhibited significant difficulties across all CT components, particularly in problem decomposition and algorithmic thinking, with an average score of 64.25. The findings indicate that students' mathematical foundations significantly influence their CT development when integrated with programming tools. The computational thinking abilities of 10th-grade Software Engineering students vary considerably when solving quadratic function problems with Python assistance. Students with stronger mathematical foundations demonstrate superior CT performance across all components, while those with weaker foundations require substantial scaffolding. These findings highlight the need for differentiated instructional approaches that consider students' varying CT development levels in mathematics education.

The Creative Thinking Ability of MTs Students in Solving One Variable Linear Inequality Problems Viewed from Mathematics Anxiety Maulida Aulia; Siswono, Tatag Yuli Eko; Harini, Novita Vindri
Journal of the Indonesian Mathematics Education Society Vol. 3 No. 1 (2025): Journal of the Indonesian Mathematics Education Society
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jimes.v3n1.p44-56

This study aims to describe the creative thinking abilities of Madrasah Tsanawiyah (MTs) students in solving problems in the material of one variable linear related to the level of mathematical anxiety. The approach used was qualitative descriptive involving three students from class VIII of MTs Al-Ibrohimi Gresik who were selected by purposive sampling based on low, medium, and high levels of mathematical anxiety. The research instruments included a mathematical anxiety questionnaire, a mathematical creative thinking ability test, and interview guidelines. Based on the results of data analysis, students with low anxiety levels showed fulfillment of the four indicators of creative thinking, namely fluency, flexibility, originality, and elaboration so that they were classified in the category of very creative. Participants with moderate anxiety met two indicators, namely flexibility and elaboration, which indicated a sufficient level of creativity. Meanwhile, students with high anxiety only met one indicator, namely flexibility, and were classified as less creative. The results of this study show a tendency to decline the ability to think creatively along with the increasing level of students' mathematical anxiety in the process of solving mathematical problems.

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