Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Union: Jurnal Ilmiah Pendidikan Matematika
Angela Vivian Budianto
University of Sydney
Education Mathematics

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
The implementation of an ethnomathematics-based Flipbook–assisted problem-based learning model on students’ critical thinking skills based on cognitive style Marlin Respita Rini; Detalia Noriza Munahefi; Angela Vivian Budianto
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 14 No 1 (2026)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v14i1.22256

Abstract

Critical thinking skills are essential in mathematics learning; however, students’ critical thinking skills at SMP Negeri 41 Semarang remain relatively low. This study aimed to determine the effectiveness of a Problem-Based Learning (PBL) model assisted by an ethnomathematics-based Flipbook of Semarang City on students’ critical thinking skills and to describe these skills based on cognitive style. The study employed a mixed-methods sequential explanatory design with a true experimental pretest–posttest control group design. The sample consisted of students from classes IX C and IX D in the 2025/2026 academic year, while six students were selected as qualitative subjects based on Field Independent (FI) and Field Dependent (FD) cognitive styles. The results show that the PBL model assisted by the Flipbook was effective, as indicated by individual  and classical mastery . The experimental group achieved a higher N-Gain than the control group and showed a significant difference based on the Independent Samples t-test . Furthermore, students with a Field Independent cognitive style obtained a higher mean score  than those with a Field Dependent cognitive style . Qualitative findings indicate that Field Independent students met critical thinking indicators well, while Field Dependent students met the indicators adequately. In conclusion, the PBL model assisted by an ethnomathematics-based Flipbook is effective in improving students’ critical thinking skills and reveals differences in performance based on cognitive style. This study contributes by providing an integrated instructional approach combining PBL, ethnomathematics, and digital Flipbook media while considering cognitive styles to enhance students’ critical thinking skills in mathematics learning.
Development of integrated e-module with Live Worksheets based on PjBL with ethnomathematics nuances of typical Indonesian foods to enhance mathematical literacy Rifan Adi Pratama; Detalia Noriza Munahefi; Angela Vivian Budianto
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 3 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i3.18203

Abstract

Mathematical literacy has become an essential global skill for individuals. This research aims to develop teaching modules in integrated electronic form live worksheets PjBL-based with nuances of ethnomathematics of typical Indonesian food by meeting the validity, practicality, and effectiveness criteria in increasing mathematical literacy. The research method is R&D with a model ADDIE. The population in this study was class VII students. Data collection techniques include documentary studies, unstructured interviews, observations, questionnaires, and tests. Data analysis used includes validity, practicality, and effectiveness tests. The research results show that the e-module is: (1) valid based on assessments from 3 validators on the content and presentation aspects with an average validity percentage of 88%; (2) practical based on 30 student responses with a score percentage of 84%; and (3) effective for mathematical literacy seen from individual learning completeness, classical completeness, average difference pretest, and posttest, and there is an increase in students' mathematical literacy. The result is an e-module that is valid, practical, and effective. This media can be developed more widely by adding different materials and adding various cultures in Indonesia.
Co-Authors Detalia Noriza Munahefi Marlin Respita Rini Rifan Adi Pratama