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All Journal Biologi Edukasi : Jurnal Ilmiah Pendidikan Biologi Chimica Didactica Acta : Journal of Chemistry and Chemistry Education
Rakhmi Fitriana
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemistry Education

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Identifikasi Miskonsepsi Siswa SMA Pada Konsep Faktor-faktor yang Mempengaruhi Laju Reaksi Muhammad Nazar; Sulastri Sulastri; Sri Winarni; Rakhmi Fitriana
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 2, No 3 (2010): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (52.597 KB)

Abstract

This research aimed to identify misconception of senior high school students class XI in SMAN 1 Lhokseumawe in learning concept of factors that affect chemical reaction rate. The instrument used in this research was 20 multiple choice questions with reasons and equipped by CRI (Certainty of Response Index) which is used to measure the degree of certainty of students’ answers. There were 38 students as respondents in this research. The data shown that 13,16% of students held misconceptions relating to the effect of surface area on rates of reaction, 57,89% students held misconceptions relating to the effect of catalyst on rates of reaction, 57,89% students held misconceptions relating to the effect of temperature on rates of reaction, However there none of students misunderstood about the effect of reactant concentration and pressure  to chemical reaction rate and most of them understood about the collision theory.
IMPLEMENTATION OF 2 STAY 2 STRAY MODEL IN LEARNING THE CONCEPT OF alpha, Beta, AND Gamma RADIATIONS Kana Puspita; Muhammad Nazar; Rakhmi Fitriana
Chimica Didactica Acta Vol 9, No 1: June 2021
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (279.725 KB) | DOI: 10.24815/jcd.v9i1.20626

Abstract

The two stay two stray cooperative learning model basically emphasizes students to work together in groups, and provides opportunities for groups to share the results and information obtained with other groups, so that the learning process will be student-centered. This study aims to achieve optimum student learning activities through the application of the Two Stay Two Stray (TSTS) model in learning the concepts of alpha, beta and gamma rays, and to describe the student's response to the TSTS cooperative learning that has been implemented. The method used is quantitative with the pre-experimental research model type one shot case study. A total of 26 students taking radiochemistry courses were the subjects of this study. Research data were collected through student activity observation sheets during lectures and a student response questionnaire consisting of 10 statements. The results of observations on student activities show that the aspect of explaining in the lecture material, the aspect of cooperation between colleagues, and the activity of answering questions, respectively, have a value of 86, 85 and 90 percent. In general, students' positive responses to the application of the TSTS model were 95%. From the research results, it can be concluded that the implementation of TSTS is very effective in increasing student learning activities, making students happy in learning, and fostering self-confidence in learning.
Co-Authors Kana Puspita Sri Winarni Sulastri Sulastri