Rita Juliani
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View article: The Development of e-Worksheet based on High Order Thinking Skills (HOTS) for Critical Thinking Student
The Development of e-Worksheet based on High Order Thinking Skills (HOTS) for Critical Thinking Student Open
This research aims to know the level validation and level practicality of development e-worksheet based on HOTS on doppler effect material from a material expert, media expert, teacher and student. The research type is a 4D model but this …
View article: Analysis of Rare Earth Metal Potential of Parmonangan Area Using X-Ray Fluorescence
Analysis of Rare Earth Metal Potential of Parmonangan Area Using X-Ray Fluorescence Open
Rare Earth Elements (REEs) are strategic commodities essential for various high-technology applications, including renewable energy, electronics, and defense systems. However, their uneven global distribution and increasing demand have int…
View article: Inventory of introduced fish species traded in Medan Regency, North Sumatra, Indonesia
Inventory of introduced fish species traded in Medan Regency, North Sumatra, Indonesia Open
Reports regarding introduced fish species traded in Medan have never been reported, even though the invasive impact of several species has occurred, especially in Lake Toba, North Sumatra. This research aims to collect data on the introduc…
View article: Synthesis of Silver Nanoparticles from AgNO<sub>3</sub> via Chemical Reduction and Their Antibacterial Activity
Synthesis of Silver Nanoparticles from AgNO<sub>3</sub> via Chemical Reduction and Their Antibacterial Activity Open
This study focuses on the synthesis of silver (Ag) nanoparticles via chemical reduction of the inorganic compound silver nitrate (AgNO 3 ), and the evaluation of their antibacterial activity against Staphylococcus aureus and Escherichia co…
View article: Pembuatan E-Modul Usaha dan Energi Berbasis Pemecahan Masalah
Pembuatan E-Modul Usaha dan Energi Berbasis Pemecahan Masalah Open
This study aims to determine the validity of the design and results of the design of e-modules. problem solving based on business and energy. This study is the creation of electronic modules of business and energy based on problem solving …
View article: Microplastic Contamination of Four Important Commercial Fish in East Coast of North Sumatera Province, Indonesia
Microplastic Contamination of Four Important Commercial Fish in East Coast of North Sumatera Province, Indonesia Open
This study aims to identify microplastic pollutants of four important commercial fish (Johnius borneensis, J. macropterus, Osteomugil engeli, and Sardinella fimbriata) in the east coast of North Sumatra Province, Indonesia. The study was c…
View article: Characteristics of Rare Earth Metals Rock Content in the Parmonangan Area of North Tapanuli Using Petrographic Methods
Characteristics of Rare Earth Metals Rock Content in the Parmonangan Area of North Tapanuli Using Petrographic Methods Open
Rare Earth Element (REE) are a commodity that continues in increase due to technological advancements. Rare earth metals are not widely know for their resources. The scarcity of rare earth metals identifies the need to search for their geo…
View article: ANALYSIS OF GRANITE ROCK WEATHERING IN THE PARMONANGAN AREA USING LANDSAT 8 SATELLITE IMAGERY
ANALYSIS OF GRANITE ROCK WEATHERING IN THE PARMONANGAN AREA USING LANDSAT 8 SATELLITE IMAGERY Open
A research has been conducted to analyze the weathering of granite rocks in the Parmonangan area using Lansat 8 satellite imagery which aims to determine the distribution of rocks, weathering processes, and types of rock forming elements i…
View article: The Development Of TPACK (Technological Pedagogical Content Knowledge) – Based Physics Module
The Development Of TPACK (Technological Pedagogical Content Knowledge) – Based Physics Module Open
The objective of this study is to determine whether or not the physics module developed utilizing TPACK (Technological Pedagogical Content Knowledge) is valid and applicable in practice. Utilizing the ADDIE model analysis, design, developm…
View article: The Influence Of The Problem Based Learning Model With Differentiated Learning On Problem Solving Ability
The Influence Of The Problem Based Learning Model With Differentiated Learning On Problem Solving Ability Open
This research aims to compare students' problem-solving abilities in two learning paradigms: one that uses the problem-based learning approach and another that uses standard teaching without differential learning. In 2023–2024, this study …
View article: DEVELOPMENT OF COMPLEX PROBLEM SOLVING TESTS IN NEWTON’S DYNAMIC FOR HIGH SCHOOL
DEVELOPMENT OF COMPLEX PROBLEM SOLVING TESTS IN NEWTON’S DYNAMIC FOR HIGH SCHOOL Open
Complex problem solving (CPS) is important for students, but educators rarely provide tests that hone CPS, because the available tests are not up to standard. The aim of the study was to develop a physics test instrument based on CPS for h…
View article: Development of Test Instruments Based on Problem Solving at The High School Level
Development of Test Instruments Based on Problem Solving at The High School Level Open
Research on the development of problem solving-based test instruments at the high school level was carried out aimed at measuring student’s problem solving abilities according to the problem solving aspect of Polya and knowing the feasibil…
View article: Study of Heavy Metal Content in Lola Snail (Trochus niloticus) in The Karang Island of Central Tapanuli Regency
Study of Heavy Metal Content in Lola Snail (Trochus niloticus) in The Karang Island of Central Tapanuli Regency Open
Research on the analysis of heavy metal content in the waters of Karang Island, Central Tapanuli Regency aims to know the metal content in Lola Snail meat, sediment, and Lola Snail shells. The research method begins with taking samples of …
View article: Modification of Microcontroller-Based Batik Canting as A Temperature and Viscosity Control of Night Wax
Modification of Microcontroller-Based Batik Canting as A Temperature and Viscosity Control of Night Wax Open
The leakage of the wax during the casting of the candle using conventional canting hampers the process of making batik, especially coloring, thereby damaging the motif and reducing the quality of written batik. The solution given is relate…
View article: Development of Learning Media Based Interactive Multimedia on Geometric Optical Materials
Development of Learning Media Based Interactive Multimedia on Geometric Optical Materials Open
Teacher innovation in making learning media is still very lacking. The research objective is to develop interactive multimedia-based learning media that are practically used in the learning process at school. The ADDIE development model is…
View article: Development of Critical Thinking Skills-Based Physic Test Instruments for High School
Development of Critical Thinking Skills-Based Physic Test Instruments for High School Open
Research on the development of critical thinking skills-based physics test instruments has been carried out which aims to develop instruments that meet the aspects of validity, reliability, differentiation, difficulty level and deceptive e…
View article: Design and Construction of A Bunut Oven Based on Artificial Intelligence
Design and Construction of A Bunut Oven Based on Artificial Intelligence Open
Artificial Intelligence-based shoe oven design has been carried out to provide an even heating process for leather shoes so that the shoe bends are perfect. The process of making leather shoes is carried out in several stages, namely desig…
View article: Development of Design and Implementation of Hybrid Learning About Vibration and Waves Using Understanding by Design (UbD) Approach
Development of Design and Implementation of Hybrid Learning About Vibration and Waves Using Understanding by Design (UbD) Approach Open
The purpose of this study was to analyse the design of Understanding by Design approach with backward design and find out its effectiveness on the Vibration and Waves during hybrid learning. The product development using research and devel…
View article: The Effect of Virtual Laboratories on Student Learning Outcomes and Self-efficacy
The Effect of Virtual Laboratories on Student Learning Outcomes and Self-efficacy Open
Research aims to understand the influence of virtual laboratory on student learning outcomes and self-efficacy and to see the correlation between self-efficacy and student learning outcomes. The kind of research is quasi experiment with th…
View article: Design of Business and Energy-Based E-Module Problem solving
Design of Business and Energy-Based E-Module Problem solving Open
Study this aim for knowing design and results validity from e - module design work and energy based problem solving . Study this is e- module design effort and energy validated by 1 media expert for evaluate appearance and suitability of e…
View article: Analysis of critical thinking skills student on the topic of optic geometry
Analysis of critical thinking skills student on the topic of optic geometry Open
This study aims to analyze: (1) learning activities with multi representation, (2) critical thinking skills of student with multi representation (3) the effect multi representation compared with assignments to student activities, (4) criti…
View article: Analysis of Clam Hill Site in Aceh Tamiang Using Geo-electric Method
Analysis of Clam Hill Site in Aceh Tamiang Using Geo-electric Method Open
The clam hill site is a prehistoric relic which is a pile of million pieces of shells. Disclosure of the fact the formation of the clam site is essential to study. The purpose of this research is to analyze the subsurface area of the Clam …
View article: Retrieving Surface Soil Moisture from Optical Satellite Imagery over Medan and Surrounding
Retrieving Surface Soil Moisture from Optical Satellite Imagery over Medan and Surrounding Open
The Earth’s environmental surface have change in local, regional and also global scale in any environmental parameter. Medan, one of big city or region in Indonesia, has fluctuated tropical climate in hydrological cycle. Soil moisture is a…
View article: Analysis of The Bahal Temple III Site Using Combination Method of Geophysics
Analysis of The Bahal Temple III Site Using Combination Method of Geophysics Open
The Bahal III temple is an ancient relics temple of the Hindu Kingdom. The research aims to know the underlayer structure of the Bahal III surface and to determine the minerals contents of the boulder sample in the Bahal III temple in the …
View article: Deformation Mapping of the 2018 Sulawesi Earthquake by Satellite Radar and Optical Remote Sensing
Deformation Mapping of the 2018 Sulawesi Earthquake by Satellite Radar and Optical Remote Sensing Open
The 7.5-magnitude earthquake was intensified epicentre located in the Mountains Donggala Regency, Central Sulawesi. Devastating earthquake and tsunami on September 2018, that struck and erased urbans and suburbs in stricken city in Central…
View article: Subsurface analysis of chinese city sites in north sumatra medan marelan subdistrict using geoelectric methods
Subsurface analysis of chinese city sites in north sumatra medan marelan subdistrict using geoelectric methods Open
The area of the Chinese city site is a maritime trading network that entered North Sumatra via the Sumatra Northeast coastline in the 11th to 14th centuries. The Chinese City Heritage site owned by North Sumatra located in Paya Pasir Villa…
View article: Application of problem based learning (PBL) to increasing student activity in the subject matter of temperature and heat
Application of problem based learning (PBL) to increasing student activity in the subject matter of temperature and heat Open
The study of Problem Based Learning (PBL) application on the subject matter of temperature and heat aims to see: (1) an increase in the activity of students taught by applying PBL learning models. (2) increased student learning performance…
View article: Identification of Geothermal Environments by Using Landsat Imagery at PLTP Sarulla unit I, Pahae Jae Subdistrict, North Tapanuli
Identification of Geothermal Environments by Using Landsat Imagery at PLTP Sarulla unit I, Pahae Jae Subdistrict, North Tapanuli Open
Geothermal energy sources have a significant influence on renewable energy sources as an affordable and sustainable solution. The aim of this study was to identify geothermal sources at the Sarulla PLTP using remote sensing technology. The…