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All Journal Jurnal Penelitian Pendidikan Matematika dan Sains Jurnal Penelitian Pendidikan IPA (JPPIPA) PENDIPA Journal of Science Education Jurnal Riset Akuntansi dan Auditing Jurnal Seni Tari
RINANINGSIH
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Journal : PENDIPA Journal of Science Education

 1 
Development of Diagnostic Test Instruments as Placement Tests to Determine Students’ Cognitive Learning Levels on Acid-Base Material Saifatun Nur Hafidzah Z, Fida; Rinaningsih
PendIPA Journal of Science Education Vol 9 No 2 (2025): June
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.2.488-496

Abstract

This study aims to determine the validity and discriminatory power of diagnostic test instruments as placement tests on acid-base material and to determine the level of students' cognitive learning. This study was conducted in June - May of the 2024/2025 Academic Year. This diagnostic test instrument development research refers to the Research & Development (R&D) development method. Data collection in this study used tests, interviews, and questionnaires. The research stage begins with potential problems, data collection, product design stage, development of diagnostic test instruments and validation by experts, validity tests, difficulty level tests, and discriminatory power tests on small-scale tests and interpretation of students' cognitive levels on large-scale trials. The results of the assessment by expert validators showed that the criteria for the developed instrument were valid. The results of the analysis of the validity of the test items obtained 25 valid question items. The results of the test of the level of difficulty of the questions obtained 11 easy criteria questions and 14 medium criteria questions. The results of the discriminatory power test obtained 25 question items with very good discriminatory power. The results of the large-scale trial showed that the average interpretation of the results of the diagnostic test instrument was 78.81%. The percentage of students who passed the test was 70.3% while the percentage of students who failed was 30%. This shows that the diagnostic test instrument is effective in that it can improve students' understanding of acid-base chemistry material.
Pengaruh Keterampilan Komunikasi terhadap Hasil Belajar Menggunakan Metode Diskusi pada Materi Asam Basa Ahmad Abidin; Rinaningsih
PendIPA Journal of Science Education Vol 10 No 2 (2026): April - June
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.10.2.439-444

Abstract

This study aims to examine the effect of communication skills on students’ learning outcomes through the use of the discussion method in acid–base material. This study is a pre-experimental research using a one-group pretest–posttest design. The results revealed that: (1) the quantity of students’ questioning across three consecutive meetings reached 20.69%, 20.69%, and 37.93%, which were categorized as fairly good. In contrast, the quantity of expressing opinions was 17.24%, 24.14%, and 20.69%, falling into the low category. In terms of quality, students’ questioning skills were classified as good, with percentages of 10.34%, 3.45%, and 3.45%. Likewise, the quality of expressing opinions was also categorized as good, with percentages of 17.24%, 20.69%, and 10.34%. (2) Students’ learning outcomes achieved a classical mastery level of 82.75%. The improvement in learning outcomes was indicated by an average N-gain score of 0.68, which falls into the moderate category. These results indicate that communication skills have an effect on learning outcomes through the implementation of the discussion method in acid–base learning.
Co-Authors Ahmad Abidin Ayu Restu Putri Chandra, Casey Elis Puspitasari Khalila, Shabrina Zahra Laila Khoirunnisa Mohamad Zaki Mubarok Nabella, Dei Gratia Kanthi Saifatun Nur Hafidzah Z, Fida Setyawati, Lina Dwi Sinaga, Rifeald Romauli Tania Selasi Amara Azizah