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All Journal VALENSI JPS Unimus Jurnal Pendidikan Kimia Universitas Riau Jurnal Pijar MIPA
Abdullah Abdullah
Program Studi Pendidikan Kimia FKIP Universitas Riau
Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Mathematics Physics Social Sciences Other

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Journal : JPS Unimus

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ANALISIS MISKONSEPSI ASAM BASA CALON GURU KIMIA DENGAN METODE THREE-TIER TEST Abdullah Abdullah
JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG Vol 8, No 1 (2020): JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG
Publisher : Pendidikan Kimia Unimus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jps.8.1.2020.10-17

Abstract

This study aims to identify the misconceptions of a prospective chemistry teacher. The study population was all students of the Chemistry Study Program at the University of Riau, while the sample was 66 students at the Chemistry Study Program at the University of Riau, selected by cluster random sampling technique. Conception data of chemistry teacher candidates on acid-base subjects have been identified and obtained by providing valid acid-base TTT diagnostic tests to chemistry teachers candidates. The result of this research showed that chemistry teacher candidate who experienced misconception on acid-base subject were 66.5% from 4 main concepts studied, namely acid and base concepts (51.15%), pH and pOH concepts and their calculations (79.06%), the concept of acid-base dissociation degree (75.43%), and the concept of acid-base titration and indicator (58.13%). The study also revealed that some students have difficulties in performing mathematical operations using logarithms.
Preliminary Analysis: Development of Higher Order Thinking Skills Problem on Stoichiometry Topic Using the Rasch Model Abdullah Abdullah; Rasmiwetti Rasmiwetti; Ardiansyah Ardiansyah
JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG Vol 10, No 2 (2022): JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG
Publisher : Pendidikan Kimia Unimus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jps.10.2.2022.32-43

Abstract

This study is a part of the development study of stoichiometric HOTS problems. This study aimed to develop the stoichiometry Higher Order Thinking Skills (HOTS) test instrument.  The stages of the study started with analyzing the material on the stoichiometry topic. The test consisted of 10 multiple-choice questions with 5 answer options. The instrument test was assessed by two chemistry education experts before being administered to 26 high school students in Pekanbaru city.  The test results were analyzed with the Rasch Measurement Model (RMM) using the Win Step software. RMM was useful to investigate item validity, item and person reliability, and item-person map. All of these criteria were useful in improving the quality of the instrument based on Item Response Theory. The results showed that almost all items were valid, except for the Q16 items. Thus, these nine items could be used as higher-order thinking test instruments for a larger sample.
Co-Authors Agus Syahputra Ardiansyah Ardiansyah Betty Holiwarni Dewi Wahyuningsih Herdini , Herdini Maria Erna Rasmiwetti Rasmiwetti Rezi Refita Roza Linda Siti Rahmi Afwa Suharmin Suharmin Welinda Safitri