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Kusnadi
Universitas Pendidikan Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Immunology & microbiology Materials Science & Nanotechnology Physics

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Aktivitas Kognitif Siswa SMA pada Pembelajaran Eubacteria Menggunakan Laboratorium Virtual Berbasis Augmented Reality   Dewi Susanti; Heri Setiadi; Kusnadi; Yanti Hamdiyati; Eni Nuraeni
BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains Vol. 9 No. 4 (2026): BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/f2m4nw36

Abstract

This study aimed to obtain information about high school students’ cognitive activities during Eubacteria learning using an AR-based virtual laboratory. This study employed a descriptive approach with a case study method. The participants consisted of 20 tenth-grade high school students. Data on students’ cognitive activities were collected using an observation sheet based on Think-Aloud Protocols (TAPs). Students’ verbal data were coded and categorized according to the types and accuracy of cognitive activities that emerged during learning. The results showed that identifying was the most frequently occurring cognitive activity. The highest frequency of inaccurate cognitive activities occurred when students formulated hypotheses. The mean score of students’ cognitive activities during Eubacteria learning using the AR-based virtual laboratory was 70.28 and was categorized as high. These findings indicate that an AR-based virtual laboratory can facilitate the emergence of various cognitive activities when students learn about Eubacteria. Keywords: Augmented Reality, Cognitive Activity, Eubacteria, Think-Aloud Protocols, Virtual Laboratory
Limit of Function Understanding by Student of National Mathematics Olimpiad ON MIPA in University Wilda Syam Tonra; Didi Suryadi; Kusnadi; Endah Cahya Mulyaning
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 13 No. 2 (2024): Volume 13 Nomor 2 (September 2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

Limits of function is one of sub-topic of Calculus that is complex and difficult to understand. Several studies, both examining misconception and understanding related to function limits, aim to improve teaching and learning. This research is single Subject Research with a single subject, namely by Student of National Mathematics Olimpiad ON MIPA in University. Data was collected through a test instrument consisting of 7 questions on understanding function limits and interviews were conducted to confirm the subject's answers. Data analysis is qualitative. The research results show that 1) Subject can determine the limit value of the function. However, the subject still has a partial understanding. 2) Subject does not understand the meaning of function limits. The subject believes that if there are 2 functions with the same function limit value, then both functions will be the same. 3) Subject can determine the value of the left limit and the right limit from the graph of the given function. 4) Subject cannot formally prove (epsilon-delta) the limit value of the function, the subject does not yet understand what information is given, what information will be sought. The subject is also not able to determine the delta limit in proof problems that have factors 5) Subject can determine the limit value at infinity 6) Subject can determine the value of infinite limit 7) Subject can investigate whether a function is continuous or not continuous. The conclusion of the research is that from 7 understandings of function limits, the subject has 4 perfect understandings regarding left and right limits, limits at infinity and infinity and function continuity. However, the subject was not yet able to prove the limit (epsilon-delta).
Co-Authors Afifi Mutiarani Ahmad Soleh Alvyn Karina Lestari Annisa Salsyabila Rahmi Any Fitriani Aris Sunandar Bambang Supriatno Dewi Susanti Didi Suryadi Endah Cahya Mulyaning Eni Nuraeni Ghurrotul Bariroh Heri Setiadi Indriyani Amalia Mahmudah Nur Cahyaningrum Mr Amprasto Mrs Yanti Hamdiyati Novantrya Salidar Ratih Mar'atus Sholihah Riandi Syifa Nurifa Dewi Tonra, Wilda Syam Topik Hidayat Utari Akhir Gusti Widi Purwianingsih