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All Journal EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Berita Biologi
Zakiyah, Aisyah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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MENINGKATKAN KEMAMPUAN BERHITUNG PERKALIAN SISWA MENGGUNAKAN METODE JARIMATIKA DI KELAS III SDI PLUS IMAM MUSLIM Zakiyah, Aisyah; Setya, Sony Tataq; Waluyo, Sujoko; Silalahi, Yetti Fauziah
Eksakta : Jurnal Penelitian dan Pembelajaran MIPA Vol 9, No 1 (2024): Eksakta : Jurnal Penelitian dan Pembelajaran MIPA
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan, UM-Tapsel

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/eksakta.v9i1.113-120

Abstract

Mathematics is considered by elementary school students to be a difficult, boring and monotonous subject. Jarimatika learning media can be used to teach mathematics to students in a simple and easy to use way. Knowing how well Jarimatika media helps elementary school students in learning mathematics is the main aim of this research. Classroom action research (PTK) with a two-cycle approach was applied in this research. Twenty third grade students at SDI Plus Imam Muslim participated in this research. Strategy for gathering information in mathematics classes through the use of an action research model based on qualitative descriptive research. Based on these findings, it appears that the Jarimatical approach in learning mathematics can improve students' numeracy skills. Based on the results of the pre-cycle test which had an average score of 60, only 8 students successfully completed the learning objectives. With an average score of 75 in the first cycle exam, fifteen students in the first cycle were able to demonstrate mastery of the material. Twenty students in cycle II passed the second cycle exam with an average score of 82.75, indicating that they had acquired all the necessary knowledge. The findings of this research indicate that third grade students at SDI Plus Imam Muslim benefit from the Jarimatika approach in improving their multiplication calculation skills.
THE GROWTH OF Dendrobium spectabile (Blume) Miq. ORCHID PLANTLET IN VACIN AND WENT (VW) MEDIUM WITH DIFFERENT CONCENTRATIONS OF COCONUT WATER Zakiyah, Aisyah; Setiari, Nintya; Nurchayati, Yulita
Berita Biologi Vol 24 No 2 (2025): Berita Biologi
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/berita_biologi.2025.222

Abstract

Dendrobium spectabile is an epiphytic orchid that grows slowly and experiences natural exploitation, so it needs to be conserved ex-situ through in vitro culture. One of the essential steps for in vitro culture is subculture to supply the nutrients needed by plantlets. Increasing the growth of these plantlets can be done by adding coconut water. This study aimed to determine the effect of adding coconut water and the optimal concentration of coconut water on the growth of D. spectabile plantlets in VW medium. The method used is growing plantlets in VW medium with different concentrations of coconut water. The research design was completely randomized with a single factor, the concentration of coconut water (0%, 5%, 10%, 15%, 20%). Data were analyzed by ANOVA at a 5% significance level. Plantlet growth was observed for two months. Parameters observed were new shoots, leaves, and roots emergence time; number of new shoots, leaves, and roots; and new leaves length. The addition of coconut water affected the growth of D. spectabile orchid plantlets. Five to ten percent of coconut water is the optimal concentration for shoots and leaves growth of D. spectabile orchid plantlets. Therefore, coconut water can increase the growth of in vitro plantlets.
Co-Authors Nintya Setiari Setya, Sony Tataq Silalahi, Yetti Fauziah Sujoko Waluyo Yulita Nurchayati