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All Journal PROSIDING SEMINAR KIMIA AIQU: Journal Multidiscipliner of Science
Siti Nur Hadijah
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Religion Chemistry Education Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Other

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Student Learning Activity in the Problem Based Learning (PBL) Model for Science Subjects La Ode Mustafa; Zubair; Siti Nur Hadijah; Meisya
AIQU: Journal Multidiscipliner of Science Vol. 2 No. 1 (2024): MARCH, AIQU: Journal Multidiscipliner of Science
Publisher : Institute Journal and Publication Muhammadiyah University of Buton

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Abstract

The fifth-grade students at SDN 3 Katobengke, who engaged well in learning activities, inspired this research. The fifth-grade students were very enthusiastic about learning. When the teacher asked a short question, the students quickly raised their hands to answer. This was evident in their reactions. The next research objective was to determine whether the use of the Problem-Based Learning learning style increases student engagement in science subjects. Furthermore, the researcher was interested in determining the variables that influence the learning activities of fifth-grade students at SDN 3 Katobengke. This research was descriptive qualitative. The following approaches were used to collect data for this study: observation, questionnaires, interviews, and documentation. According to research findings obtained from teacher interviews, children became more engaged when using the Problem-Based Learning pedagogy.
UJI FITOKIMIA DAN TOKSISITAS EKSTRAK ETANOL DAUN KAJAJAHI (Leucosyke capitellata (poir) Wedd.) Nur Laila Zulfah Sari; Arif Nur Sho’im; Amanda Salwa Nur Azizah; Habel Ta’dung; Siti Nur Hadijah; Erwin
PROSIDING SEMINAR KIMIA Vol 4 No 1 (2025): Prosiding SNK 2025
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Kajajahi Leaves (Leucosyke Capitellata (poir) Wedd.) or also called Kandih Uso which has benefits such as slowing attachment, aggregation and platelet secretion. Therefore, this study was carried out aimed at finding out the secondary metabolites of the Kajajahi leaf knowing and the toxicity of the Kajajahi leaf ethanol extract using the Brine Shrimp Lethality Test (BSLT) method. This extract is made by maceration using ethanol solvents for 7 days. Phytochemical tests are carried out to determine the secondary metabolites contained. Phytochemical content includes flavanoid, steroid, phenolic, saponin and quinone. The toxicity test was carried out using Artemia Salina L. shrimp larvae which was 48 hours old. The results of the extract toxicity are identified by the persentation of the death of the shrimp larvae using the LC50. This study shows the metabolites of secondary metabolites Ethanol extract Kajajahi leaf including flavanoid, steroid, phenolic, saponin and quinons and to be toxic with LC50 values of 0.0000166 ppm. Keywords: Brine Shrimp Lethality Test (BSLT), Kajajahi Leaves, Leucosyke Capitellata, Phytochemical Test, Toxicity
Co-Authors Amanda Salwa Nur Azizah Arif Nur Sho’im Erwin Habel Ta’dung La Ode Mustafa Meisya Nur Laila Zulfah Sari Zubair