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All Journal Jurnal Pengabdian Pada Masyarakat Indiktika : Jurnal Inovasi Pendidikan Matematika
Yesi Martha Afrillia
Universitas Riau
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Education Engineering Mathematics Other

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Workshop Pemanfaatan Lingkungan Belajar di Sekitar Sekolah dalam Pembelajaran Matematika bagi Guru Sekolah Dasar di Gugus IV Kecamatan Siak Hulu, Kampar Zetra Hainul Putra; Intan Kartika Sari; Gustimal Witri; Syahrilfuddin Syahrilfuddin; Neni Hermita; Mahmud Alpusari; Eddy Noviana; Munjiatun Munjiatun; Muhammad Ramadhan; Yesi Martha Afrillia; Sabrina Eka Putri
Jurnal Pengabdian Pada Masyarakat Vol 5 No 2 (2020)
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30653/002.202052.288

Abstract

WORKSHOP OF UTILIZATION OF LEARNING ENVIRONTMENT AROUND SCHOOLS IN MATHEMATICS LEARNING FOR ELEMENTARY SCHOOL TEACHERS IN SIAK HULU, KAMPAR. The workshop on the utilization of learning environment was motivated by the lack of teachers' mathematical and didactical knowledge. Teachers tend to explain techniques or procedures for solving mathematical problems without explaining the real context or situation of the problem, and this is contrary to the theories of mathematical learning that develop, such as the cognitive development theory, the realistic mathematics education, and the didactic situation theory. In addressing this problem, the team held a week workshop consisting of the lectures, observation, lesson plans, and implementation of learning by the teachers participating in the workshop, and reflection and evaluation of workshop activities. The data collection instrument consists of a questionnaire measuring the attitudes and beliefs of teachers towards mathematics, students learning mathematics, and mathematics learning based on real environments, photos, video recordings, and documents produced by the participants. The results of the implementation of this workshop show an increase in teachers' beliefs and attitudes towards students learning and mathematics learning based on real-life situations. Some participants were able to present the potential of the school environment as a source of learning mathematics, compile lesson plans, and carry out environment-based mathematics learning. The recommendation from this activity is that in the future it is necessary to have a service program that focuses on strengthening the teachers' mathematics content knowledge and making mathematics learning media and/or teaching aids.
Validation of Mental Calculation Strategy Questionsfor Phase A Elementary School Students Eni Mulyani; Zetra Hainul Putra; Jesi Alexander Alim; Yesi Martha Afrillia
Indiktika : Jurnal Inovasi Pendidikan Matematika Vol. 8 No. 2 (2026): Indiktika : Jurnal Inovasi Pendidikan Matematika
Publisher : FKIP Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/indiktika.v8i2.21085

Abstract

Mental calculation strategy is essential for developing young learners’ number sense, flexibility, and efficiency in arithmetic. However, assessment instruments specifically designed to evaluate mental calculation performance in Indonesian primary education remain limited. This study aimed to develop and conduct a preliminary psychometric evaluation of an instrument for assessing second-grade students’ performance on mental calculation tasks in addition and subtraction. Using a quantitative approach with a preliminary instrument development and psychometric testing design, the study involved 34 second-grade students from Witama Nasional Plus Elementary School, Pekanbaru. The instrument consisted of 30 written items, including context-free and context-based tasks. Data were analyzed using item-total correlation, Cronbach’s Alpha, item difficulty, and point-biserial discrimination. The results showed that 20 items were valid and the instrument achieved acceptable internal consistency (Cronbach’s Alpha = 0.747). Most items were of moderate difficulty, while the discriminating power ranged from poor to very good. These findings indicate that the instrument has promising initial psychometric quality, although several items require revision before broader validation and application.
Co-Authors Eddy Noviana Eni Mulyani Gustimal Witri Intan Kartika Sari Jesi Alexander Alim Mahmud Alpusari Muhammad Ramadhan Munjiatun Munjiatun Neni Hermita Sabrina Eka Putri Syahrilfuddin Syahrilfuddin Zetra Hainul Putra