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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Proceeding Seminar Nasional IPA
Faisal, Syarif
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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ANALISIS MULTI-REPRESENTASI PRAKTIK SEDERHANA DARI FENOMENA EFEK TYNDALL Faisal, Syarif; Nugroho, Sunyoto Eko; Prasetya, Agung Tri
Proceeding Seminar Nasional IPA 2024
Publisher : LPPM UNNES

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Abstract

Praktikum sederhana dapat menjadi acuan berpikir kritis yang melibatkan kemampuan multi representasi dalam memahami efek tyndall. Penelitian ini mendeskripsikan fenomena efek tyndall yang dilakukan melalui metode praktikum sederhana. Penelitian menggunakan pendekatan deskriptif kualitatif melalui metode praktikum untuk pengambilan data. Teknik analisis yang digunakan berupa analisis deskriptif kualitatif berdasarkan fenomena observasi yang dilakukan peneliti. Hasil yang didapatkan bahwa air dapat digunakan untuk mengidentifikasi keberadaan partikel koloid melalui peristiwa efek tyndall. Terdapat pola penghamburan cahaya yang semakin meningkat di dalam larutan setiap penambahan tetes susu. Peristiwa ini berbanding terbalik dengan nilai lux meter yang mengalami penurunan setiap penambahan partikel susu. Hal ini dapat dipahami secara simbolik telah terjadi pelemahan gelombang cahaya yang keluar dari larutan koloid. Pemahaman multi representasi akan sangat membantu menjelaskan fenomena efek tyndall. Penelitian ini memberikan rekomendasi analisis multi representasi dalam pembelajaran kimia khususnya efek tyndall melalui praktikum sederhana dengan pengamatan secara teliti, pemahaman ukuran partikel, dan memvisualisasikan secara simbolik..
Science Literacy Assessment Instrument for Additives and Addictive Substances: Development, Validation, and Rasch Model Analysis Faisal, Syarif; Rusilowati, Ani; Susilaningsih, Endang
Jurnal Penelitian Pendidikan IPA Vol 9 No 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.4376

Abstract

Science literacy is one of the areas of basic literacy that PISA focuses on. Science literacy is essence of learning in the 21st century. The purpose of this study is to develop and validate instruments to assess science literacy in the area of additives and addictive substances. The researcher refers to the modified PISA framework and Bloom's Revised Taxonomy. The developed instrument was tested for reliability and validity using the Aiken V method and the Rasch model. The research respondents consisted of 47 students from two junior high schools: a public school and a private school that has been accredited A. The results of the analysis showed that the instrument has validity. The results of the analysis showed that of the 25 items given there were 24 valid items, the resulting Cronbach's alpha value of 0.86 showed very good criteria, it can be concluded that the instrument has high validity and good reliability. This instrument is expected to be used to measure the quality of education and science literacy of students in Indonesia.
Co-Authors Agung Tri Prasetya Ani Rusilowati Endang Susilaningsih Sunyoto Eko Nugroho, Sunyoto Eko