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All Journal Scientechno: Journal of Science and Technology Research of Scientia Naturalis
Clark, Isabella
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Agriculture, Biological Sciences & Forestry Chemistry Computer Science & IT Education Languange, Linguistic, Communication & Media Library & Information Science Physics Social Sciences

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Using Multimedia Tools to Enhance Cognitive Engagement: A Comparative Study in Secondary Education Farida, Ida; Clark, Isabella
Scientechno: Journal of Science and Technology Vol. 3 No. 3 (2024)
Publisher : Yayasan Pendidikan Islam Daarut Thufulah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/scientechno.v3i3.1742

Abstract

BackgroundThe integration of multimedia tools in education has become increasingly prevalent, especially in secondary education, as it is believed to enhance cognitive engagement and facilitate deeper learning. However, empirical studies comparing the effectiveness of different multimedia tools in fostering cognitive engagement in secondary education remain limited. This study aims to bridge this gap by evaluating the impact of multimedia tools on cognitive engagement in secondary school classrooms. PurposeThe primary objective of this research is to examine the effects of multimedia tools—such as videos, interactive simulations, and educational games—on students' cognitive engagement. The study compares traditional instructional methods with multimedia-enhanced teaching strategies to assess which approach leads to higher levels of cognitive engagement among secondary school students. MethodA comparative research design was employed, involving two groups of secondary school students. One group received traditional instruction, while the other engaged with multimedia tools during lessons. Data were collected using cognitive engagement scales, classroom observations, and student interviews. ResultsThe findings reveal that students using multimedia tools demonstrated significantly higher levels of cognitive engagement, particularly in tasks requiring problem-solving and critical thinking. Students expressed greater interest and motivation in lessons involving multimedia. ConclusionThe study concludes that multimedia tools effectively enhance cognitive engagement in secondary education. These tools should be incorporated into teaching practices to foster deeper learning and improve student outcomes.
The Ecological Impact of Volcanic Ash Deposition from Mount Semeru’s Eruption on Soil Microbial Communities and Plant Succession Kadji, Robertho; Elíasdóttir, Emilía; Clark, Isabella
Research of Scientia Naturalis Vol. 2 No. 6 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/scientia.v2i6.2542

Abstract

Volcanic eruptions are powerful geological events that drastically alter terrestrial ecosystems, yet the specific ecological recovery mechanisms, particularly the interplay between soil microbiology and vegetation, remain underexplored. The recent eruption of Mount Semeru in Indonesia deposited significant layers of volcanic ash, creating a unique natural laboratory to study primary succession. This research aimed to analyze the ecological impact of this ash deposition on the composition of soil microbial communities and the subsequent patterns of plant succession in the affected areas. The study employed a field survey method across a gradient of ash deposition thickness. Soil samples were collected for DNA metabarcoding to analyze bacterial and fungal community structures, while vegetation quadrats were established to monitor plant species recolonization and growth over a 12-month period. The results revealed a significant initial reduction in microbial diversity in heavily impacted soils, with a subsequent shift towards communities dominated by stress-tolerant, chemoautotrophic bacteria. This altered microbial landscape was strongly correlated with the emergence of pioneer plant species adapted to nutrient-poor volcanic substrates. The study concludes that volcanic ash deposition fundamentally resets soil microbial ecosystems, and this shift is a critical determining factor that directly governs the trajectory and composition of early-stage plant succession.
Co-Authors Elíasdóttir, Emilía Ida Farida Robertho Kadji