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All Journal Al Ishlah Jurnal Pendidikan Didaktik : Jurnal Ilmiah PGSD STKIP Subang FARABI: Jurnal Matematika dan Pendidikan Matematika
Nurfadillah Hasan
Universitas Pendidikan Indonesia
Computer Science & IT Decision Sciences, Operations Research & Management Education Languange, Linguistic, Communication & Media Mathematics Other

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DARI BUMI KE NURANI: SINERGI SDGS, PRAMUKA, DAN BIMBINGAN TAKWA DALAM SATU PETUALANGAN SDIT CENDEKIA PURWAKARTA Alma Amelia; Ashfa Nurul Mahmudah; Casya Insania; Friseza Nayla Aribah Zahra; Nisha Fitria; Nurfadillah Hasan
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 11 No. 04 (2025): Volume 11 No. 04 Desember 2025 Published
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i01.11950

Abstract

Environmental issues remain significant challenges in many areas. The low level of environmental literacy and students’ involvement in environmental conservation practices highlights the importance of implementing practical environmental education from an early age. This community service program aims to enhance environmental literacy and students’ environmental awareness at SDIT Cendekia Purwakarta through hands-on learning activities integrated with the Sustainable Development Goals (SDGs), particularly SDG 4 (Quality Education) and SDG 15 (Life on Land). The program employed a descriptive participatory approach using a station-based (Pos to Pos) learning model consisting of three activity zones: the Green Zone (school greening activities), the Collaboration Zone (3R-based waste management practices), and the Quiz Zone (learning evaluation). The results indicate high student enthusiasm and active participation in all activities, improved understanding of environmental conservation concepts, and the development of responsibility and collaborative skills. This program demonstrates that practice-based environmental education is effective in fostering sustainable behaviors and supporting the achievement of the SDGs in elementary school settings.
Analisis Pemahaman Hukum Kekekalan Bilangan Berdasarkan Teori Perkembangan Kognitif Piaget Nurfadillah Hasan; Ashfa Nurul Mahmudah; Tatu Helsa Aulia; Ulfi Nurmalasari; Zahra Wardatul Janah; Hafiziani Eka Putri
FARABI: Jurnal Matematika dan Pendidikan Matematika Vol 8 No 2 (2025): FARABI: Jurnal Matematika dan Pendidikan Matematika
Publisher : Program Studi Pendidikan Matematika FKIP UNIVA Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/farabi.v8i2.1119

Abstract

This study aims to evaluate the level of understanding of the concept of conservation of numbers in students of PAUD age (six years) and 2nd grade elementary school (nine years) based on Jean Piaget's cognitive development theory. A descriptive qualitative approach was used with direct observation techniques and semi-structured interviews, as well as a number conservation test using marbles, coins, and round paper of different sizes. The subjects of the study consisted of four children: two six-year-old children at RA Salafiyah and two nine year-old children at SDN 5 Nagrikaler, Purwakarta Regency. The results showed that six-year-old children had understood the principle of conservation of numbers and realized that the number of objects remained the same even though the arrangement and size changed according to Piaget's concrete operational stages. In contrast, nine-year-old students had not fully mastered the concept, they were still influenced by the visual perception of size and arrangement. Factors of learning motivation, additional experiences (tutoring and family support), and individual interests played an important role in this difference in understanding. The findings confirm that chronological age is not the only determinant of cognitive development, so that mathematics learning strategies need to be adjusted to the characteristics of students' motivation and learning experiences.
Developing a Numeracy Literacy Test Instrument on Halves and Quarter Fractions for Elementary School Students Hafiziani Eka Putri; Nurfadillah Hasan; Indah Nurmahanani; Primanita Sholihah Rosmana
AL-ISHLAH: Jurnal Pendidikan Vol 18, No 3 (2026): In Progress September 2026
Publisher : STAI Hubbulwathan Duri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35445/alishlah.v18i3.9950

Abstract

Numeracy literacy is a fundamental competency in elementary education, yet existing assessments in Indonesian primary schools remain predominantly procedural and inadequately measure students’ conceptual understanding of fractions. This study aimed to develop and validate a numeracy literacy test instrument on halves and quarter fractions for second-grade elementary school students. This research employed a Research and Development (RD) approach using the ADDIE model, comprising analysis, design, development, implementation, and evaluation. Ten essay items were constructed based on numeracy literacy indicators and validated by two experts. Following expert review, one item was excluded, and the remaining nine items were piloted with 21 second-grade students from a public elementary school in Purwakarta, Indonesia. Item quality was analyzed using ANATES 4.0.5, including item validity, reliability, difficulty level, and discriminating power. Expert validation indicated that nine items were suitable for field testing after revision. Empirical analysis showed that seven items met all psychometric criteria, while two items were excluded because of insufficient validity and discriminating power. The final instrument demonstrated high reliability (r₁₁ = 0.84) and satisfactory item validity (rxy = 0.330–0.818). Item difficulty ranged from medium to very easy, whereas discriminating power ranged from very poor to good. The resulting seven-item instrument is psychometrically acceptable and suitable for assessing second-grade students’ numeracy literacy on fraction concepts. Although the findings provide preliminary evidence of validity and reliability, further validation with larger and more diverse samples is recommended to strengthen the instrument’s generalizability and broader educational applicability.
Co-Authors Alma Amelia Ashfa Nurul Mahmudah Casya Insania Friseza Nayla Aribah Zahra Hafiziani Eka Putri, Hafiziani Eka Indah Nurmahanani Nisha Fitria Primanita Sholihah Rosmana Tatu Helsa Aulia Ulfi Nurmalasari Zahra Wardatul Janah