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All Journal Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Journal of Physical Education Health and Sport
Rizal Hidayat
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Astronomy Earth & Planetary Sciences Mathematics Other

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Peran Pecahan dan Desimal dalam Kehidupan Sehari-Hari Rizal Hidayat; Muhammad Reyhan Rambe; Rayhan Nawawi
Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa Vol. 2 No. 6 (2024): Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/bilangan.v2i6.335

Abstract

Fractions and decimals are basic mathematical concepts that have an important role in various aspects of daily life. This article discusses how fractions and decimals are used in daily activities such as measuring, calculating, and carrying out financial transactions. For example, in cooking, fractions are used to measure food ingredients, while decimals often appear in weight and length measurements. In economic transactions, decimals are key in rounding numbers and calculating prices. This article also explains the importance of understanding conversions between fractions and decimals to make decision making easier, both in personal and professional contexts. By providing applicable examples, it is hoped that this discussion can increase appreciation of the role of fractions and decimals in real life and encourage deeper mastery of these concepts.
Analisis Peran Pecahan dan Desimal dalam Kehidupan Rizal Hidayat; Muhammad Reyhan Rambe; Rayhan Nawawi; Khotna Sofiyah
Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa Vol. 3 No. 1 (2025): Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/algoritma.v3i1.338

Abstract

Fractions and decimals are basic mathematical concepts that have an important role in various aspects of daily life. This article discusses how fractions and decimals are used in daily activities such as measuring, calculating, and carrying out financial transactions. For example, in cooking, fractions are used to measure food ingredients, while decimals often appear in weight and length measurements. In economic transactions, decimals are key in rounding numbers and calculating prices. This article also explains the importance of understanding conversions between fractions and decimals to make decision making easier, both in personal and professional contexts. By providing applicable examples, it is hoped that this discussion can increase appreciation of the role of fractions and decimals in real life and encourage deeper mastery of these concepts.
The Effect of Core Stability Exercises on The Accuracy of Jump Serve Volleyball Athletes Rizal Hidayat; Dikdik Zafar Sidik; Mulyana
Journal of Physical Education Health and Sport Vol. 12 No. 1 (2025)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpehs.v12i1.30570

Abstract

This study aimed to investigate the effect of core stability exercises on the accuracy of jump serves in volleyball athletes. The research was conducted using a quasi-experimental design with a two-group pre-test and post-test approach. The participants consisted of volleyball athletes from the Star Sport Rancaekek Club, who were divided into an experimental group and a control group. The experimental group received a five-week core stability training program, while the control group continued their regular training routine. Jump serve accuracy was measured using the AAHPER Serving Accuracy Test. Data analysis showed that the experimental group demonstrated a significant improvement in serve accuracy compared to the control group. These findings indicate that core stability training effectively enhances body balance, postural control, and coordination—key components in executing accurate jump serves. The results highlight the importance of incorporating core stability exercises into volleyball training programs, especially for improving specific technical skills. This study contributes to the field of sports coaching by offering practical insights into effective methods for developing skill-based performance in young volleyball athletes. 
Co-Authors KHOTNA SOFIYAH Muhammad Reyhan Rambe Mulyana Rayhan Nawawi Sidik, Dikdik Zafar