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All Journal AGRIVITA, Journal of Agricultural Science International Journal of Active Learning Jurnal Pendidikan Progresif
Djoa, Dominikus Djago
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Agriculture, Biological Sciences & Forestry Education

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Design and Feasibility of EXE Learning Media on the Topic of Chemical Bonding Djoa, Dominikus Djago; Kusumaningtyas, Pintaka
International Journal of Active Learning Vol 6, No 2 (2021): October 2021
Publisher : International Journal of Active Learning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijal.v6i2.25430

Abstract

The transformation on the industrial era 4.0 has greatly influenced changes in the way students learn who are more dominantly use gadgets both online and offline. This research aims to develop an e-Learning XHTML Editor (EXE) learning media which is feasible to be used in chemistry learning on the topic of Chemical Bonding, and also to test the validity and practicality of the media. The study used a research and development (R & D) design by adapting Hannafin and Peck’s model. The steps are limited to the design of EXE learning media. The feasibility of the EXE learning media is tested in terms of validity and practicality. The instrument used are validation questionnaire and students’ response questionnaire. The data were obtained and analyzed by using descriptive percentage. The results of the feasibility test conducted by the material experts, media experts, and teachers obtained an average of 89% with very feasible category. Meanwhile, the practicality test was obtained from the results of students’ response questionnaire from SMAN 8 Samarinda and SMAN 3 Tenggarong, showing the practicality value is 87% with the category of very practice and easy to operate and useful. It means the EXE learning media is feasible and practice to be used as chemistry learning media on the topic of Chemistry Bonding.
Spodoptera litura F. Immune System Against Exposure to the Biopesticide Mirabilis jalapa L. Maulina, Dina; Sumitro, Sutiman Bambang; Lestari, Sri Rahayu; Djoa, Dominikus Djago
AGRIVITA Journal of Agricultural Science Vol 47, No 1 (2025)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v47i1.4351

Abstract

Synthetic insect repellent contributed to increasing farm products. This research studies the influence of an extract of Mirabilis jalapa. It is a vegetative insect repellent. It was applied to the polyphagous pest's cellular and humoral immune reactions, Spodoptera litura. This study targeted the body's resistant reaction to S. litura at the cellular and humoral tiers after contacting biopesticides from M. jalapa extracts. This research examined the process of cellular counteraction by assessing the varieties of hemocytes employing the ANOVA test and a phagocytosis test using percentages. The function of the humoral-resistant counteraction was assessed by phenoloxidase analysis employing the ANOVA test. The results demonstrated that a 0.2% M. jalapa concentrate solution noticeably affected the numbers of prohemocytes, granular cells, oenocytoid cells, and spherules compared to reference samples (p<0.05). Moreover, sub-lethal levels show noticeable kinds in PO enzyme levels (p<0.05), with a notable improvement after one hour of handling. Phagocytosis, on the other hand, demonstrated a drop in the ratio of phagocytic cells at 0.4% dose concentrations contrasted to the control group, suggesting a hidden impact on the pest's resistant response. This research reveals that the ability of M. jalapa extract as a biopesticide with immunosuppressive effects on S. litura.
The Role of Teacher Response and Support in Fostering Smart Risk-Taking Behavior of K-12 Chemistry Students Through Learning Intention Djoa, Dominikus Djago; Sunyono, Sunyono; Hariri, Hasan; Rahman, Taufik
Jurnal Pendidikan Progresif Vol 14, No 1 (2024): Jurnal Pendidikan Progresif
Publisher : FKIP Universitas Lampung

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Abstract

Abstract: The Role of Teacher Response and Support in Fostering Smart Risk-Taking Behavior of K-12 Chemistry Students Through Learning Intention. Objectives: This study explores how teacher support influences K-12 students' learning intentions and risk-taking in Indonesian chemistry education, aiming to bolster creative and critical thinking. Methods: A quantitative survey aligned with the positivist paradigm examines the dynamics between teacher behaviours, classroom interactions, and students' willingness for intelligent risk-taking. Findings: It reveals the critical role of supportive teaching methods in promoting smart risk-taking, enhancing classroom engagement, and shaping students' educational interests and attitudes. These insights suggest a profound impact on educational practices in chemistry, highlighting the importance of supportive learning environments. Conclusion: The research emphasizes the need for fostering robust teacher-student engagement and creating conducive learning spaces, with broad implications for teacher training, curriculum design, and educational policy. It underscores the value of dynamic, engaging, and effective learning experiences in the chemistry classroom that empower students to take intelligent risks, significantly contributing to their educational development. Keywords: chemistry smart taking behavior; k12 students; learning intention; teacher support and response.DOI: http://dx.doi.org/10.23960/jpp.v14.i1.202403
Co-Authors Dina Maulina Hasan Hariri Pintaka Kusumaningtyas Sri Rahayu Lestari Sunyono - - Sutiman B. Sumitro Taufik Rahman