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All Journal JCER (Journal of Chemistry Education Research) Edukimia
Fitri Yuliani
Universitas Negeri Padang
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Other

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Pengembangan Instrumen Literasi Kimia pada Tema Silver Tarnish dan Polishing Silver Fitri Yuliani; Eka Yusmaita; Fauzana Gazali
Edukimia Vol 3, No 1 (2021): Edukimia - Vol. 03, Issue 01
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ekj.v3.i1.a247

Abstract

This study aims to develop chemical literacy instrument that can be used to measure chemical literacy skills of students. The chemical literacy instrument in this study was arranged based on four domains of chemical literacy consisting of content, context, HOLS and affective aspects. This study uses the Model of Educational Reconstruction (MER) design. Content validity testing was conducted with five experts and analysed using CVR, while empirical testing of students was analysed using the Rasch model with Ministep application. Based on results of this research, chemical literacy instrument on silver tarnish and silver polishing topic is categorized as valid and reliability value is of 0,92.
ANALYSIS OF CHEMICAL LITERACY INSTRUMENT ON OXIDATION AND REDUCTION REACTIONS MATERIAL BY USING RASCH MODEL Eka Yusmaita; Fitri Yuliani; Fauzana Gazali
JCER (Journal of Chemistry Education Research) Vol. 6 No. 2 (2022): Volume 6. No 2. December 2022
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v6n2.p124-130

Abstract

This study aims to analyze the quality of chemical literacy instrument on oxidation and reduction reactions material using the Rasch model. The instrument construction is based on four domains of chemical literacy which include aspects of content, context, HOLS, and affective. The instrument assessment rubric is grouped into five levels, namely (1) scientific illiteracy, (2) nominal scientific literacy, (3) functional scientific literacy, (4) conceptual scientific literacy and (5) multi-dimentional scientific literacy. Assessment criteria for chemical literacy instrument carried out by experts include aspects of content, constructs, language and graphics consisting of thirteen sub questions. The score obtained from validation process is a type of multi-rater data which is analyzed by using the Many Facet of Rasch model. The next stage is empirical study of validated and revised instrument was tested on a limited basis to thirty students and analyzed using the Winstep application. Based on the results of the research, chemical literacy instrument is categorized as valid based on the fit test and unidimensionality test.
Co-Authors Fauzana Gazali Yusmaita, Eka