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All Journal JBIO: jurnal biosains (the journal of biosciences) Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Bioedusiana: Jurnal Pendidikan Biologi
Adi Hartono
Universitas Negeri Medan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Medicine & Pharmacology

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PHYTOCHEMICAL SCREENING OF LICHENS EXTRACT Usnea sp. ON PINES IN THE BARRIAN HILL FOREST, NORTH SUMATRA Ashar Hasairin; Ahmad Shafwan S Pulungan; Adi Hartono
JBIO: jurnal biosains (the journal of biosciences) Vol 8, No 3 (2022): JBIO: jurnal biosains (the journal of biosciences)
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jbio.v8i3.42602

Abstract

Lichen is an organism that has a high level of biodiversity and contains secondary metabolites. This study aims to determine the secondary metabolites of lichen extract Usnea sp. on Pine. Qualitative descriptive research method. Preparation of Usnea sp. extract. carried out by maceration method using 96% ethanol (1:10) for 5 days. The results of the study based on the phytochemical screening of the ethanol extract of lichen Usnea sp. contains alkaloids, flavonoids, saponins and tannins and triterpenoids. The results of the phytochemical screening showed a positive (+) result indicated by a change in color or the formation of a precipitate or the formation of foam after adding reagents to the test extract. Meanwhile, a negative result (-) is indicated by the absence of a change in color or the formation of precipitate or the formation of foam after adding reagents to the test extract.
DEVELOPMENT OF HOTS-BASED QUESTIONS ON BIOLOGY LEARNING Adi Hartono; Ashar Hasairin; Diky Setya Diningrat
Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 1 (2022): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v5i1.1351

Abstract

According to observations on the Lower-Level Organisms Taxonomy course, it showed that the questions used in the course have not been presented at the higher-order thinking skill (HOTS) level. HOTS-based questions are one of the assessments in the cognitive domain that function to train HOTS and solve complex problems well. Moreover, it can train critical thinking skills as one aspect of the skills needed in the 21st century. Therefore, this study aims to develop HOTS-based questions on Monera topic to improve students' critical thinking skills. The research was conducted from January to February 2022. Development was carried out using ADDIE approach. Data collection techniques were carried out through the questionnaires and validation instruments by expert validators. The data were analyzed in two ways, namely content validity and construct validity. The results showed that the validity of the questions by expert validators was categorized as very good. Meanwhile, empirical validity shows that there were 10 questions declared valid from a total of 20 questions. The results of reliability test were 0.780 valid with a high interpretation. The test of difficulty level results showed that there were 8 moderate questions and 2 difficult questions. The results of differentiating power test showed that there were 1 very good question, 6 good questions, 2 sufficient questions and 1 weak question. Thus, it can be concluded that from a total of 20 HOTS-based questions that were developed only 10 questions were declared empirically feasible to improve students' critical thinking skills on Monera topic. It is recommended to use these questions in Lower-Level Organisms Taxonomy lectures.
Urgency Analysis of Development of Self-Discovery and Exploration (SDE) Integrated Low Level Organism Taxonomy Module to Improve 21st Century Skills Adi Hartono; Ashar Hasairin; Diky Setya Diningrat
Bioedusiana: Jurnal Pendidikan Biologi Vol 7, No 2 (2022): Bioedusiana
Publisher : Jurusan Pendidikan Biologi - Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/bioed.v7i2.5191

Abstract

21st-century skills are very important skills possessed by the younger generation in order to compete and successfully face challenges in the global era. One of the efforts to improve 21st Century Skills is to integrate the Discovery Learning model and the assignment of the IQF into the concept of an innovatively created interactive learning module in the form of Self-Discovery and Exploration (SDE). Therefore, this study aims to explore the potential need for developing SDE-based modules in the Taxonomy of Low-Level Organisms courses to improve students' 21st-century skills. This research includes Research and Development (RD) research using the ADDIE model. The essence of this research specifically focuses on the Analysis stage in the ADDIE model series. Data collection techniques using questionnaires and interviews. The findings were analyzed descriptively qualitatively with the Miles and Huberman approach. The results showed that the lecturers admitted to agreeing and supporting the development of the SDE module to improve the quality of teaching materials in the Lower Level Organism Taxonomy course, as many as 60.40% of students from the Department of Biology, Faculty of Mathematics and Natural Sciences, State University of Medan admitted that they needed to improve their twentieth century skills. 21 and as many as 94% of students in the major agreed to use the SDE-based Taxonomy of Low-Level Organisms module. Based on this, it can be concluded that the development of the SDE integrated Low Level Organism Taxonomy module is an important thing to do to improve students' 21st Century Skills.
Co-Authors Ashar Hasairin Diningrat, Diky Setya Pulungan, Ahmad Shafwan S