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Conceptual understanding of high school students on plantae Yasinta Choirina; Murni Ramli; Yudi Rinanto
Journal of Education and Learning (EduLearn) Vol 13, No 1: February 2019
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/edulearn.v13i1.8357


Kingdom Plantae is a topic taught in Grade Tenth in Indonesia high school. The previous researchers have found misconceptions and difficulties in understanding the classification and the nomenclature system of Kingdom Plantae. Understanding basic concepts of Kingdom Plantae is important to study the more complex system of Plantae. This research was aimed to analyze the conceptual understanding of high school students on Plantae. The participants were 372 eleven graders who had studied Kingdom Plantae and selected randomly from eleven high schools in Surakarta, Indonesia. The diagnostic test four-tier consisting of 20 items. The instrument was to identify conceptual understanding. The instrument showed result on validity (mean = 1.00 and SD = 0.06) and reliability (0.46). The test showed that 10.5% students grouped as understand, and the rest varied as to False Negative (4.4%), False Positive (10.1%), Lack of Knowledge (45.6%), and Misconception (29.4%). Based on the results of the test, the students have misconceptions about monocots and dicots, the morphology of Anacardium occidentale, Musa sp., and Solanum tuberosum, classification of Anacardium occidentale. It was recommended to do detail examination of the reasons of low achievement in conceptual understanding of students.
Penerapan Penelitian Tindakan Kelas Cooperative Learning Tipe Peer Teaching untuk Meningkatkan Keterlibatan Siswa dalam Pembelajaran Biologi Nory Shenta Dewi; Murni Ramli; Yudi Rinanto
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 15, No 1 (2018): Proceeding Biology Education Conference
Publisher : Universitas Sebelas Maret

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The research aims to increase students' engagement in Biology learning by applying cooperative learningmethod specifically peer teaching. The subjects consisted of 32 high school students focusing on LowAchievement (LA) and High Achievement (HA) students. This research is classroom action research (CAR)with 3 Cycles. The research procedure includes the stage of reflection, planning, implementation of action andobservation. Behavioral Engagement (BE) data obtained through observation, other data in the form ofPsychological Engagement (PE) and Cognitive Engagement (CE) obtained through student engagementquestionnaire based on Student Engagement Instrument (SEI). Technique of data validation used istriangulation technique. Technique of analysis data performed by data reduction, data presentation and drawingconclusions based on qualitative descriptive analysis. The results showed that cooperative learning methodspecifically peer teaching can increase student engagement in biology learning. The average percentage of allBE aspects observed in LA students before the treatment given, Cycle I, Cycle II and Cycle III respectivelywas 13.72%; 35.24%; 48.26% and 64.24% respectively. Meanwhile BE results of HA students before thetreatment given, Cycle I, Cycle II and Cycle III respectively were 22.22%; 48.97%; 56.6% and 64.76%respectively. The results of PE of LA students before the treatment given to Cycle III increased by 3.54% whilePE in HA students before the treatment given to Cycle III increased from 3.75%. The result of CE analysis ofLA students has increased before the treatment given toward Cycle III that is 2.94% while in HA studentsincreased by 2.95%.
Kombinasi Ekstrak Etanol Buah Mengkudu (Morinda citrifolia L.) dan Daun Pepaya (Carica papaya L.) sebagai Hepatoprotektif selama Pengobatan Tuberkulosis TITIK SUNARNI; RINI PRASTIWI; MARDIYONO MARDIYONO; YUDI RINANTO
Publisher : Fakultas Farmasi Universitas Pancasila

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Hepatoprotective activity of Morinda citrifolia L. fruits and Carica papaya L. leaves ethanolic extract have been investigated in antituberculosis-induced rats. Forty rats were divided into following eight groups: normal control group was treated with normal feed and water; negative control group was treated with isoniazid and rifampicin, positive control group was treated with isoniazid, rifampicin and Methicol®, and the last five groups were treated with isoniazid, rifampicin and combination of M. citrifolia L. fruits and C. papaya L. leaves extract on various doses. All groups were treated daily for 27 days. Serum levels of bilirubin, alanine aminotransferase (ALT) as well as aspartate aminotransferase (AST) were determined on day -0, 14, 21 and 28 to monitor the liver function. All rats were sacrified on day-28 for liver histology observation. Combination of M. citrifolia extract 20 mg/200 g bw and C. papaya extract 120 mg/200 g bw significantly decreased the serum level of ALT, AST as well as bilirubin. The histology study showed that this combination could prevent the liver damaged based on the lower percentage of necrosis (27.83%), as compared to that of negative control (47.47%).
Analisis kualitas butir soal instrumen assessment diagnostic untuk mendeteksi miskonsepsi siswa SMA pada materi virus Prima Mitha Puspitasari Setyaningrum; Murni Ramli; Yudi Rinanto
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (687.685 KB) | DOI: 10.26555/bioedukatika.v6i2.10925


Evaluasi merupakan kegiatan, untuk melihat sejauh mana keberhasilan pembelajaran telah dilaksanakan. Kegiatan evaluasi memerlukan alat sebagai pengumpul data yang disebut instrumen. Sebuah instrumen dikatakan baik apabila memenuhi beberapa kriteria. Salah satunyadengan melakukan analisis butir soal. Penelitian ini bertujuan untuk mengetahui validitas, reliabilitas, tingkat kesukaran, dan daya pembeda soal pada  insrumen diagnostic materi virus. Responden penelitian berjumlah 346 siswa kelas X, XI, dan XII SMA Negeri dan Swasta di Kota Magelang. Instrumen yang diberikan berupa Assessment Diagnostic pada materi virus, yang terdiri dari soal Kolom Bukti Fakta (KBF), essay, dan Structure Communication Grid (SCG). Penelitian ini merupakan penelitian kuantitatif untuk mengetahui kualitas instrumen. Hasil penelitian menunjukkan persentase validitas soal KBF dan SCG 63,2% , soal essay 100%, semua soal reliabel, tingkat kesukaran soal mudah KBF dan SCG 38,6%, soal sedang 37,1%, dan 24,3% soal sukar. Sedangkan kesukaran soal essay 20% pada kategori mudah dan 80% pada kategori sedang. Daya pembeda soal  KBF dan SCG sebesar 62,2% kategori jelek, 31,5% kategori cukup, 6,3% kategori baik. Daya pembeda soal essay 60% soal pada kategori cukup dan 40% soal kategori baik. Berdasarkan hasil analisis, dilakukan perbaikan butir soal. Instrumen pada materi virus yang sedang dikembangkan, merupakan yang pertama di Indonesia. Quality analysis of item in the Assessment Diagnostic instrumen to detect misconceptions in high school students on virus material. Evaluation is an activity to see the extent to which the success of  learning has been carried out. Evaluation activities require tools as data collectors called instrumens. An instrumenis good, if it meets several criteria. One of them is by analyzing questions’ item. This study was aimed to determine the validity, reliability, level of difficulty, and differentiation of problems in the diagnostic instrumens of virus material. Respondents in this study are 346 students of class X, XI, XII of public and private High Schools in Magelang City. The instrumen provided is in the form of a Diagnostic Assessmenton virus material, which consists of the Facts Proof Column (KBF), essay and Structure Communication Grid (SCG). This research is a quantitative studywhich determine the quality of the instrumen. The results showed the percentageof the validity of KBF and SCG questions was 63,2%, essay questionswere 100%, all questions are reliable, the level of difficulty of easy questions of KBF and SCG is 38,6%, moderate questions are 37,1%, and 24,3% are difficult questions. While the difficulty of the essay is 20% in the easy category and 80% in the medium category.The differentiation of the KBF and SCG questions is 62,2% in the bad category, 31,5% in the sufficient category, 6,3% in the good category. The differentiation of essay questions 60% in adequate category and 40% in good categories. Based on the analysis, further improvements were made to the items. Instrumens in the virus material which are being developed are the first in Indonesia.