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INDONESIA
Lantanida Journal
Published by Universitas Islam Negeri Ar-Raniry Banda Aceh
ISSN : 23563133     EISSN : 25489062     DOI : -
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education
Lantanida Journal is an, scientific journal open-access containing results research, literature reviews and recent news on science and technology in the areas of educational learning and learning development. This journal is formed from the initiative of Leaders Chemistry departmen, lecturers, staff, alumni and students of Chemistry Education Department UIN Ar-Raniry Banda Aceh.
Arjuna Subject : -
Articles 193 Documents
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KOMPARASI MODEL PROBLEM BASED LEARNING (PBL) DAN MODEL PROJECT BASED LEARNING (PJBL) TERHADAP KETERAMPILAN BERPIKIR KRITIS SISWA Muttakin, Muttakin; Attahara, Thalitha; Dewi, Ucia Mahya
Lantanida Journal Vol 12, No 1 (2024)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v12i1.23223

Abstract

The PBL and PjBL models are student-centric learning models that are needed to improve student skills in the 21st century. This study aims to find out the differences between the PBL and PjBL models of critical thinking skills of students at SMAN 1 Lhokseumawe on material reaction speed. This research uses experimental methods with a type of Quasi Experimental Design. The sampling technique was carried out in a purposive way with a total sample of 72 students. The test results show no significant differences between PBL and PjBL models. The result of this test is sig (2-tailed) 0.162 > 0.05 H0 received and H1 rejected. In other words, there is no significant difference in critical thinking skills between students taught with the PjBL model and the PBL model 
PENGUKURAN KADAR LOGAM Hg, KADMIUM, ARSEN, DAN KROMIUM (VALENSI 6) DALAM AIR SUMUR Ngibad, Khoirul
Lantanida Journal Vol 11, No 2 (2023)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v11i2.18358

Abstract

The presence of metals such as Hg, Cd, As, and Cr6+ in waters can cause health problems. Hg poisoning causes central nervous system symptoms, Cd poisoning can cause digestive problems and kidney disease, As poisoning can cause jaundice, kidney bleeding, and skin cancer and Cr6+ is highly corrosive and can cause cancer. This study aimed to measure the levels of Hg, Cd, As, and Cr6+ in water wells in Taman District, Sidoarjo Regency. In this study, the AAS method was used at 253.7 nm for Hg analysis; 228.8 nm for Cd analysis; 193.7 nm on As analysis, and UV-Vis spectrophotometric method at 530/540 nm for Cr(VI) analysis. The water wells in Taman District, Sidoarjo Regency have Hg, As, Cd, and Cr6+ levels of 0.0006 each; <0.002; <0.0002; and <0.013 mg/L (well water A) and <0.0006; <0.002; <0.0002; and <0.013 mg/L (well water B). Based on the chemical parameters, it can be concluded that the levels of Hg, As, Cd, and Cr6+ still meet the quality standards (maximum levels).
PENGEMBANGAN MODUL PRAKTIKUM BIOKIMIA: ANALISIS KANDUNGAN JAHE DENGAN GC-MS TERINTEGRASI PENDIDIKAN ISLAMI MENGGUNAKAN MODEL INKUIRI TERBIMBING Wicaksono, Ardian Trio; Mubarak, Hafiz; Fatya, Alvian Ikhsanul; Ardiansyah, Ardiansyah
Lantanida Journal Vol 12, No 1 (2024)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v12i1.22442

Abstract

This research aims to develop biochemistry practical instructions that are integrated with Islamic education based on local wisdom in South Kalimantan which utilizes Gas Chromatography-Mass Spectrometry (GC-MS) technology using a guided inquiry model. The method for developing practical instructions uses the ADDIE model including the needs analysis, design, development, implementation and evaluation stages. Data was obtained through interviews with Banjar residents, literature studies to integrate Islam and science, validity tests of material experts and media experts, as well as surveys of student responses to practical instructions that have been implemented in the learning environment. The research results showed that the development of guided inquiry-based practical instructions that utilized GC-MS technology was categorized as the learning source (78.75), and very valid as the instructional Media (81.25). Then, based on student responses, this practical guide received an excellent category (95) to be applied to the biochemistry practical course
THE IMPLEMENTATION ONLINE AND OFFLINE LEARNING STRATEGIES IN INDONESIAN SENIOR HIGH SCHOOL DURING THE COVID-19 PANDEMIC Nurdin, Nurmalahayati; Kadir, Muhammad Ya’kub Aiyub; Sipahutar, Amlisa Mutiandini; Sipahutar, May Sintia; Ardiansyah, M Edo; Fuadi, Zahrul; Diana, Nasri
Lantanida Journal Vol 12, No 1 (2024)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v12i1.23103

Abstract

The world was very surprised by the existence of a new virus variant originating from China which we are usually familiar with as the Covid-19 Virus Variant. The Covid-19 virus is a threat to all corners of the world, this virus has forced the world to experience a global pandemic for the past few years. This type of research is a quantitative research type with data collection using a questionnaire. The methodology used in collecting research data this time was a survey of various teachers at high school of the same level in the cities of Banda Aceh and Aceh Besar. The purpose of using the survey method is to obtain accurate data on a group that is not limited to demographic information and is able to collect attitudes and beliefs in a population. This study used a data collection technique using random sampling consisting of 160 participants (23 men and 137 women) consisting of all teachers and school management in several high school schools in Banda Aceh and Aceh Besar. Online learning is also supported by students, teachers, school facilities and infrastructure that are ready to implement changes to the learning system imposed by the government. This is also supported by school facilities and infrastructure where schools already have good computers and have internet access that can be used in the online learning process
THE LITERACY AND NUMERACY ABILITY PROFILE WHICH ARE VIEWED FROM MINIMUM ASSESSMENT COMPONENTS (AKM) Mellyzar, Mellyzar; Novita, Nanda; Muliani, Muliani; Marhami, Marhami; Retnowulan, Sri Rahayu
Lantanida Journal Vol 11, No 2 (2023)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v11i2.19866

Abstract

Literacy and numeracy skills are cognitive learning outcomes measured in the Minimum Competency Assessment (AKM) and are part of the National Assessment (AN). This study aims to describe the literacy and numeracy achievement profile of junior high school students in terms of three aspects, namely content, cognitive processes, and context The descriptive quantitative approach method used in this research involved 141 class VIII junior high school students in North Aceh Regency and Lhokseumawe City through random sampling. Respondents are participants who took part in the 2021 National Assessment. The research instrument used was a question on literacy with 26 questions and numeracy with as many as 30 questions according to the grid and aspects of the AN that had been validated. The context of the questions is arranged in the form of personal, socio-cultural, and scientific. The distribution of the questions is in the form of 20% multiple-choice, 60% complex multiple-choice, 10% matching, 5% short answer or short answer, and 5% description. The results showedthe average percentage score of literacy ability was 43.87% with low criteria, meanwhile for numeracy skills, the average percentage score was 33.91% with very low criteria. These results indicate that students' literacy and numeracy skills in terms of each content need to be improved through the implementation of learning programs and the use of textbooks that lead to the improvement and development of literacy and numeracy skills.
KAJIAN KINETIKA ADSORPSI LOGAM TIMBAL (Pb) OLEH ADSORBEN PASIR TERAKTIVASI NAOH DENGAN VARIASI KONSENTRASI Karbeka, Martasiana
Lantanida Journal Vol 12, No 1 (2024)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v12i1.20530

Abstract

In this research, a study of the adsorption kinetics of heavy metal Pb(II) with white sand adsorbent has been carried out. The use of white sand as an adsorbent is based on the habits of the people who use white sand to purify water. For wider use, in this study, it was used to adsorb lead metal which has a high toxicity. Increased the adsorption power of white sand, chemical activation was carried out using NaOH with various concentrations of 2, 4 and 6 M. Adsorption kinetics of Pb(II) by adsorbents were carried out using a batch system with time variations of 15, 30, 60, 90, 120 minutes. The behavior pattern of Pb(II) absorption by the adsorbent was studied using first-order, second-order kinetic models, pseudo-first-order Lagergren's equation and pseudo-second-order Ho's equation. The results showed that the absorption of Pb(II) by sand adsorbents in various variations, both control and activated NaOH 2, 4 and 6 M, followed a pseudo-second-order adsorption kinetics with a coefficient of determination (R2) of 1. In addition, based on kinetic studies pseudo second order there is no value comparison between qe, exp and qe, hit. The highest k value was found in the 4 M NaOH activated sand adsorbent, which was 206.921 g/mg.h, indicating a faster absorption rate of the adsorbate by the adsorbent. Thus, the activation of the adsorbent at variations in base concentration affects the surface area of the adsorbent where the greater the surface area, the faster the absorption rate of Pb(II).
KLASIFIKASI DAUN BIDURI (Calotropis gigantea L.) DARI LOKASI BERBEDA MENGGUNAKAN SPEKTROSKOPI INFRAMERAH DAN KEMOMETRIK Zahara, Hafni; Karma, Taufiq; Yusuf, Muhammad
Lantanida Journal Vol 11, No 2 (2023)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v11i2.15096

Abstract

In this study, FTIR spectroscopy paired with PCA was utilized to differentiate biduri plants from different places. All biduri leaf samples from each location were then obtained for their FTIR spectrum in the wave number range of 4000-400 cm-1 and pretreated with the 1st derivative. The preprocessed spectrum was then examined using HCA and PCA chemometric methods; based on the HCA classification results, the biduri samples were divided into three groups, but the selected groups were unable to identify the biduri samples from the geothermal manifestation area. The PCA findings displayed in the plot scores then successfully classified the biduri leaf samples into four groups, with a total variance explained by 63% (PC1 44% and PC2 19%). This developed method can be used to correctly identify biduri plants originating from the geothermal manifestation area of Mount Seulawah Agam, allowing it to be concluded that environmental conditions in the geothermal manifestation area of Mount Seulawah Agam affect the content of secondary metabolites present in biduri plants, as evidenced by the PCA plot, which shows samples from geothermal and non-geothermal locations forming their respective groups.
DEVELOPMENT OF INSTRUMENT FOR HIGH SCHOOL STUDENTS' READING LITERACY AND NUMERATION ON THERMOCHEMICAL MATERIAL Siswaningsih, Wiwi; Rahmawati, Triannisa; Salsabila, Audria; Zahira, Alfina Dzabillah; Nahadi, Nahadi; Suhanda, Hokcu; Mora, Abraham; Lee, Won Koo
Lantanida Journal Vol 12, No 1 (2024)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v12i1.23427

Abstract

The aim of this research is to produce a minimum competency assessment instrument (MCA) on thermochemical material that meets the test criteria that is suitable for measuring students' reading literacy and numeracy in terms of validity, reliability, level of difficulty and distinguishing power. The research design used is a development and validation design. The participants involved in this research were high school students at one of the high schools in Bandung City as respondents and validators consisting of 3 lecturers and 2 teachers in their fields. The product resulting from this research is the MCA test instrument on thermochemical material which consists of 5 reading literacy questions and 15 numeracy questions. This test instrument was declared valid based on content validity and based on empirical validity, 16 questions were valid and 4 questions were invalid. The reliability test results showed that the reliability value for the objective questions was 0.73, while the reliability value for the description questions was 0.77 and both were declared reliable. The results of the MCA instrument competency level analysis show that students' reading literacy and numeracy competencies are included in the basic category and require special intervention with a refractive index of 1.53 and 1.00.
PENGARUH PEMBERIAN EKSTRAK DAUN BELALAI GAJAH TERHADAP KADAR MALONDIALDEHID DAN SUPEROKSIDA DISMUTASE PADA TIKUS DENGAN AKTIVITAS TINGGI Felix, Jesslyn; Suyono, Tan; Chiuman, Linda
Lantanida Journal Vol 11, No 2 (2023)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v11i2.19116

Abstract

Clinacanthus nutans Lindau is known as the elephant trunk leaf which belongs to the Acanthaceae family. C. nutans can act as an antioxidant by reducing free radicals from the mitochondrial electron transport chain in the cell membrane. In this study, elephant trunk leaves will be studied regarding their content and antioxidant activity and their association with free radicals/Reactive Oxygen Species (ROS), which are compounds that are highly reactive. ROS can cause damage to cell integrity and functional cell disruption. Free radical reduction prevents lipid oxidation, which then reduces malondialdehyde (MDA) levels. By potentiating the antioxidant properties of Superoxide Dismutase (SOD) and reducing lipid peroxidation, C. nutans can reduce oxidative stress. The purpose of this study was to evaluate the effect of elephant trunk leaf extract on malondialdehyde and superoxide dismutase levels in rats with high activity. The research method used was laboratory experimental research with a Randomized Posttest Only with Control Group Design. In this study, 25 male white rats of the Wistar strain were divided into 5 groups: normal, negative control, and treatment I, II, III which were given elephant trunk leaf extract at successive doses of 50, 300, and 2000 mg/kg BW ( Weight). and high activity for 14 days. MDA measurements using a spectrophotometer and SOD using calorimetry were carried out after 14 days. The results showed that elephant trunk leaf extract reduced MDA levels and increased SOD activity in the blood plasma of rats induced by high activity (P value <0.05).
PROBLEMATIKA IMPLEMENTASI KURIKULUM MERDEKA PADA MATA PELAJARAN IPAS Mutia, Nur Balqis; Admawati, Harsi
Lantanida Journal Vol 12, No 1 (2024)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v12i1.23141

Abstract

This research was conducted to identify problems in the implementation of the Independent Curriculum in Natural and Social Sciences (IPAS) subject in an elementary school. A total of two teachers at SD Negeri 9 Kuala Langsa were selected as research subjects with purposive sampling techniques. Both teachers have been implementing the Merdeka Curriculum since the 2022/2023 school year. This research is descriptive qualitative research with interview questions and observation sheets as research instruments. The interview questions were used to explore information related to the problems of implementing the Merdeka Curriculum faced by educators in IPAS subject. In addition, information related to the process of learning preparation, implementation, and assessment was obtained through observation of documents, learning activities, and the school environment. The results showed that teachers faced problems in the implementation of the Merdeka Curriculum at the preparation, implementation, and assessment of learning stages. These problems can be overcome through regular meetings with teacher working groups, using effective learning strategies, and training on the implementation of the Merdeka Curriculum.

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