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All Journal Biosfer: Jurnal Pendidikan Biologi Bioma : Jurnal Biologi Indonesia
Wibisono, Bagus Tito
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology

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Increasing Student’s Self-regulation in Excretory System Learning: A Development of Learning Materials through Moodle Wibisono, Bagus Tito; Rusdi, R; Komala, Ratna
Biosfer: Jurnal Pendidikan Biologi Vol. 15 No. 1 (2022): Biosfer: Jurnal Pendidikan Biologi
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/biosferjpb.23704

Abstract

In Biology learning, technology becomes a tool to facilitate 21st-century learning trends that are digitally oriented, distanced, internet-integrated learning materials, as well as being open and independent. This trend is a challenge because the results of a preliminary study at SMAN 37 Jakarta showed that 42.3% of students experienced a decline in their biology learning outcomes during the distance learning period, especially in the Excretory System chapter. Of these, 61.5% thought the decline was due to low self-regulation. This study aims to develop learning materials in the Excretory System through Moodle to increase students’ self-regulation. The method used is research and development with the Borg and Gall development model using the Moodle platform. The development of learning materials was validated by 5 experts on aspects of the material, learning materials, and language. The result is the scope of the material aspect is 90.4%, the learning material aspect is 90.8%, and the language aspect is 88%, all of which meet the very feasible criteria. The learning materials were tested on 30 respondents and obtained pre-test and post-test scores on self-regulation. The results were tested using the paired sample t-test showed a significance value (p) = 0.001< 0.05. This result illustrated that the use of Excretory System learning materials can increase students’ self-regulation.
Leaf area and stomatal density of Rhizophora mucronata Poir. under high and low light environment of Nature Tourism Park Angke-Kapuk, Jakarta, Indonesia Wibisono, Bagus Tito; Tri Wahyuni; Murniati Simanjuntak; Abizar; Supriyatin
Bioma Vol. 20 No. 2 (2024): Bioma
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/bioma.v20i2.49339

Abstract

Each type of mangrove has specific stomatal characteristics, one of which is stomatal density. This stomatal density is directly proportional to the rate of evaporation, transpiration, and photosynthesis which is a form of mangrove adaptation to its environment. One of the external factors affecting stomatal density is light intensity which can vary due to canopy cover. This study aims to compare the stomatal density of Rhizophora mucronata Poir. in the Angke-Kapuk area, Jakarta, Indonesia. The location is a mangrove conservation area that has experienced a lot of environmental pressure, especially due to population growth and land conversion into settlements. Descriptive methods was used with transect sampling techniques at locations that represent very open and very closed canopies determined by purposive sampling. Stomatal sampling was carried out by applying a transparent nail polish on the lower surface of the leaf and then covering it with tape. The tape was observed using a microscope, and showed that Rhizophora mucronata Poir. has a low stomatal density. The results of the parametric independent sample t-test showed that the stomatal density of Rhizophora mucronata was not significantly different between very open and very closed canopy cover.
Co-Authors Abizar Murniati Simanjuntak Ratna Komala, Ratna Rusdi, R Supriyatin Tri Wahyuni