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All Journal Jurnal Florea Bioedukasi: Jurnal Pendidikan Biologi
Harlita Harlita
Pendidikan Biologi FKIP UNS
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology

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OPTIMALISASI PEMANFAATAN PEWARNA ALAMI (NATURAL DYES) UNTUK PREPARAT MASERASI (GOSOK) TULANG Dewi Puspita Sari; Harlita Harlita
Florea : Jurnal Biologi dan Pembelajarannya Vol 7, No 1 (2020)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/florea.v7i1.5598

Abstract

A method of maceration can be used for making tissue slide wich are hard as bone, teeth, and the hard other preparation. The purpose of making maceration slide is to be identify parts bone tissue main the thigh or teeth. Benefits making maceration slide is the quality and satisfaction result from preparation and easy check microtechnique preparation about the parts of the structure of havers system. The effort to make maceration slide better quality is to apply dyesstuff. In general colourful ingredients often worn is dyestuff synthetic. Dyestuff this sometimes it is difficult to get applied in scholl because prices and the use of. Based on urgency that is, the use of a natural dye expected to be the solution. Coloring matter natural will ne used for staining among others (1)extract fruit beet (Beta vulgaris L), (2) Secang wood (Caesalpinia sappan L) 3) turmeric (Curcuma domestica Val). Method used in maceration with series of stages the sample collection, fixation, dealcoholization,staining, and ends with mounting. The research was showed that natural dye of Secang wood (Caesalpinia sappan L) has the best colour cosistency to dye bone maceration slide. The optimization of the best time is 15 and 30 minutes with dye secang wood. Turmeric and fruit beet having persisten staining tend to pale and not scattered evenly distributed on havers system.
The Effect of Google Classroom-Based Learning on Written Skills of 10th Graders Fitri Choirul Muttaqin; Bowo Sugiharto; Harlita Harlita
Bioedukasi: Jurnal Pendidikan Biologi Vol 14, No 1 (2021): BIOEDUKASI: Jurnal Pendidikan Biologi
Publisher : Department of Biology Education Faculty of Teacher Training and Education Sebelas Maret Un

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/bioedukasi-uns.v14i1.52112

Abstract

Communication skills are one of the skills that students must have in the Industrial Revolution 4.0. Based on the preliminary study at a public senior high school in Karanganyar, Central Java, students' written skills are still low due to the inaccurate method used by teachers. The applied knowledge that utilizes information and communication technology is needed to improve students' written communication skills. This study aimed to determine the effect of Google classroom-based e-learning on students' written communication skills. This research was a quantitative descriptive study. Students' written skills were measured using the written communication skills assessment instrument developed by Sonseca et al. (2015), which contains ten indicators. The data analysis technique used in this study was the paired sample t-test to compare the results of the pretest and post-test and the N-gain test. The results showed that the correlation value between indicators on the instrument was between 0.388 to 0.567, which means that all indicators used in the research instrument were valid. Besides, Cronbach's alpha value is 0.625, which means that the research instrument is reliable. The pretest means the score was 1.30, and the post-test means the score was 2.85. The results of the paired sample t-test showed a significant value of 0.000, and the results of the N-gain test showed a result of 0.41. Based on the tests' results, there are differences in students' written communication skills between before and after the application of Google classroom-based e-learning.
Co-Authors Bowo Sugiharto Dewi Puspita Sari Fitri Choirul Muttaqin