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All Journal Jurnal Biologi Tropis SeBaSa: Jurnal Pendidikan Bahasa dan Sastra Indonesia
Purnamasari, Cici
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Languange, Linguistic, Communication & Media Social Sciences

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PENGEMBANGAN BAHAN AJAR PEMBELAJARAN TEKS LAPORAN HASIL OBSERVASI BERDASARKAN INDEKS KEPADATAN LEKSIKAL PADA KELAS X Purnamasari, Cici; Marlia, Marlia; Triandy, Rendy
SEBASA Jurnal Pendidikan Bahasa dan Sastra Vol 7 No 2 (2024): SeBaSa
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/sbs.v7i2.26891

Abstract

This research is motivated by the difficulty of students in understanding teaching materials that have complex sentences. The purpose of this research is to develop class X Indonesian teaching materials, especially chapter 1 of the observation report text based on the lexical density index. The method used is research and development (R&D) with primary data collection techniques from class X Indonesian teaching materials and secondary data from observations, questionnaires, and documentation of class X-5 at Pasundan 3 Bandung High School. This research uses Halliday's theory (1985) to calculate the lexical density index. The results showed that the lexical density index in the original teaching materials was 8.1 (very high). The development of teaching materials was carried out by simplifying the sentences, thus reducing the lexical density index to 6.4 (medium). After developing teaching materials, students understand the teaching materials that have been developed better than the original teaching materials. This is reinforced by the pretest average value of 62.5 and increased with the posttest average value to 81.5. In addition, the questionnaire results showed that 40% of students understood the teaching materials before they were developed and 60% did not understand them, and were also reinforced by the results of the validation of educators who stated that the development version of teaching materials was feasible to use. Thus, the development of teaching materials based on the lexical density index was successful in improving students' learning outcomes.
Difference Between Sucrose and NaCl Flotation Method for Detecting Soil-Transmitted Helminths (STH) Ghofur, Abdul; Purnamasari, Cici
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): in Progress
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12519

Abstract

This in vitro study aimed to compare the detection performance of sucrose and NaCl flotation solutions in detecting Soil-Transmitted Helminths (STH) eggs. A total of 24 pooled stool samples were examined using four treatments: 25% sucrose (specific gravity 1.10), 26% sucrose (specific gravity 1.11), 25% NaCl (specific gravity 1.19), and 26% NaCl (specific gravity 1.20), with six replicates for each treatment. Because the number of eggs found was low, the data were analyzed descriptively using a count data approach based on the positivity rate and the total number of eggs detected. The results showed that in the 25% sucrose, 26% sucrose, and 25% NaCl treatments, no Soil-Transmitted Helminths eggs were found (0/6 replicates; 0%). In contrast, in the 26% NaCl treatment, 3 STH eggs were found in 3 replicates with a positivity rate of 50%, consisting of 2 Ancylostoma duodenale eggs and 1 Trichuris trichiura egg. These results indicate that only the 26% NaCl solution (specific gravity ≥1.20) was capable of detecting Soil-Transmitted Helminths eggs under the conditions of this study. However, the low number of eggs detected is thought to be related to the mild degree of infection, which limited statistical analysis between treatments.
Co-Authors Abdul Ghofur Marlia, Marlia Triandy, Rendy