Article Per Year (5 Year)
p-Index From 2020 - 2025
0.562
P-Index
This Author published in this journals
All Journal Lantanida Journal JIPI (Jurnal IPA dan Pembelajaran IPA)
Sari, Richa Purmaya
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Physics

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
PENGARUH PENGEMBANGAN PENUNTUN DAN KIT PRAKTIKUM KIMIA TERINTEGRASI MODEL INKUIRI DALAM MENINGKATKAN HASIL BELAJAR PESERTA DIDIK Akmalia, Nur; Silaban, Ramlan; Sari, Richa Purmaya
Lantanida Journal Vol 13 No 1 (2025): January-June 2025
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v13i1.29193

Abstract

The aim of this study is to identify the validity of the practicum kit that has been developed, the validity of the chemistry practicum guide integrated with the inquiry model, and the impact of using chemistry practicum manuals and kits on student learning outcomes. This study was carried out to address a number of issues with the way chemistry practicum is implemented in schools, including a lack of resources and instruments, a procedural approach, and a low level of student participation. Participants in this study included practicum guides that were integrated with the Inquiry model, five chemistry teachers, two peer reviewers, two lecturers from Medan State University, and up to 22 MAS Muta'allimin Aceh Besar students in class XI MIA 1. According to the ADDIE framework, this experiment fits within the category of development research. Tests of student learning outcomes and validation sheets of practicum manuals and kits were used to gather data. SPSS 21 software was used to analyze the data using quantitative descriptive statistical techniques, such as normality tests and One Sample T-Test hypothesis testing. According to the results, the practicum kits and instructions created had an average score of 3.54, coming into the "very feasible" category. Furthermore, the average learning outcome for students using practicum kits and manuals is 3.54, coming into the "very feasible" category.
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK SCIENCE, TECHNOLOGY, ENGINEERING, AND MATHEMATICS (STEM) BERBASIS KEWIRAUSAHAAN UNTUK PROYEK KARTU MENU INFORMASI GIZI BUAH Sari, Richa Purmaya; Adlim, Muhammad; Gani, Abdul; Akmalia, Nur
Lantanida Journal Vol 13 No 1 (2025): January-June 2025
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v13i1.29198

Abstract

The absence of worksheets that can encourage students' entrepreneurial spirit and promote the process of activity is one of the difficulties in implementing STEM education. The purpose of this study is to provide Student Worksheets (LKPD) for menu card projects that include details on the nutritional value of fruit and are based on Science, Technology, Engineering, and Mathematics (STEM). The research and development technique is used in this study. The analysis, design, development, implementation, and evaluation phases are all included in the ADDIE development framework. Nevertheless, this article is restricted to the stage of development. A needs analysis questionnaire and a LKPD product quality assessment sheet were used as instruments for data collection. The findings demonstrated that the average scores for the expert validity evaluation of LKPD for face validity and content validity were 92.5% and 90%, respectively. With a very valid category, the overall validation result for the STEM-based LKPD combined with entrepreneurship is 91.25%. Consequently, experiments can be conducted using the created LKPD.
Immobilization of Inorganic Sulfide on Dead Coral (Acropora cervicornis) Coated with Chitosan as an Adsorbent for Dissolved Mercury(II) Ions Adlim*, Muhammad; Elfa, Devita; Habibati, Habibati; Sari, Richa Purmaya; Hasan, Muhammad; Khaldun, Ibnu; Yavuz, Musa
Jurnal IPA & Pembelajaran IPA Vol 9, No 1 (2025): MARCH 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v9i1.44006

Abstract

Treatment of dissolved mercury within water sources is crucial. This study reported the utilization and efficacy of chitosan-sulfide immobilized on dead corals (Acropora cervicornis) as an absorbent for dissolved mercury (II). Sulfide ions were immobilized on coral particles coated with chitosan (coral-Chi). Chitosan and sulfide were either mixed or stepwise immobilized on dead coral particles. The amount of mercury absorbed by this treated absorbent (coral-Chi-Na2S) was studied and compared to the control (coral only or coral-Chi). The adsorption process is a bath method within a chromatography column. The absorbent characteristics and the amount of mercury(II) absorbed were characterized. The results showed that the highest percentage of adsorption used adsorben coral-Chi-Na2S, which was 71% with an eluent flow of 0.5 mls-1 within the absorbent column. The capacity of adsorption ion Hg2+ after prior eluting in the column for 24 h contact time was 0.4057 mg/g, 0.4017 mg/g, and 0.3746 mg/g in coral-Chi-Na2S, coral, and coral-Chi respectively
Co-Authors Abdul Gani Adlim*, Muhammad Adlim, Muhammad Akmalia, Nur Elfa, Devita Habibati Habibati Ibnu Khaldun Muhammad Hasan Ramlan Silaban Yavuz, Musa