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Dewi Syafriani, Dewi
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Journal : Jurnal Pendidikan MIPA

 1 
Development of STEM-PjBL-Based Teaching Materials to Enhance Students' Science Literacy on Acid-Base Topic Amdayani, Susilawati; Dibyantini, Ratu Evina; Syafriani, Dewi; Dalimunthe, Makharany
Jurnal Pendidikan MIPA Vol 26, No 3 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i3.pp1289-1307

Abstract

An essential skill for learning chemistry is science literacy, which includes attitudes toward science, the scientific method, application in practical settings, and conceptual comprehension. However, the previous research revealed that students’ science literacy among Indonesian undergraduate students is still low, especially when it comes to abstract and complicated concepts like acids and bases. The study aims to develop STEM-PjBl-based teaching materials on acid acid-base topic and evaluate their effectiveness in enhancing students' science literacy. The study employs the 4D development model. The product effectiveness test was conducted at the development stage using a quasi-experimental design in the form of a one-group pretest-posttest design. The research subjects were 90 chemistry education undergraduate students who took basic chemistry courses in the 2024/2025 academic year, consisting of 3 classes. Data was gathered by a science literacy test, validation sheets, and practicality surveys for lecturers. The validity of questionnaire responses was obtained by three experts' judgment using the kappa coefficient, the practicality questionnaire was also assessed using the kappa coefficient, while the validity of data on science literacy improvement was obtained through pre-test and post-test results. The results showed that the average kappa coefficient of expert validation of STEM-PjBL-based teaching materials is 0.88 (high validity). The practicality questionnaire produced an average kappa coefficient of 0.89 (high practicality). The effectiveness test obtained an average n-gain value of 0.65 (moderate), as evidenced by student involvement in designing projects to create soft drinks from natural ingredients through the PjBL model. The designing and evaluating scientific investigations indicator (n-gain 0.67) shows the most significant improvement because students were required to systematically design experimental procedures, including problem identification, variable determination, hypothesis formulation, planning tools, materials, and work steps following scientific principles.    Keywords: teaching materials, STEM-PjBL, science literacy, acid-base.
Co-Authors Agustina, Husna Sari Alyanti, Davina Amdayani, Susilawati Ardila, Mutia Asyiah, Siti Atika, Fitthriyah Auliya, Nayla Milda Ayi Darmana, Ayi Bajoka Nainggolan Batubara, Nuraina Br Bangun, Devrinawati Butar Butar, Leli Andriani Dalimunthe, Makharany Damanik, Nova Dawolo, Berlinda Dwi Purnama Dibyantini , Ratu Evina Ginting, Elfrida Hany, Nadila Cempaka Ida Duma Riris Junifa Layla Sihombing, Junifa Layla Lubis, Destiyati Yulrima Marham Sitorus Mutiara Agustina Nst Nainggolan, Angel Natalia Marsaulina Nainggolan, Roma Agustina Uli Nasution, Irma Yuliani Nasution, Nita Nazelina Nasution, Zulfikri Munawir Ningsih, Asih Sukma Nst., Mutiara Agustina Panjaitan, Tiara Valentina Pardosi, Keken Tiur Puspita Sari, Dwy Putri Widyanti Ramadani, Dewi Suci Ratu Evina Dibyantini Rumahorbo, Nurli Yanti Sahputri, Ayumi Amalia Samosir, Rafidah Almira Sari, Dwy Puspita Sianturi, Yonaria Agustina Silalahi, Basaria Revalina Silitonga, Sriwindi Sinaga, Nazwa Atila Sipayung, Angela Inma Siregar, Muhammad Isa Siregar, Nurhidayah Sutiani, Ani Syuhada, Feri Andi Tampubolon, Cindy Claudin Tarigan, Regina Sicilia Telaumbanua, Debi M N Ulviah, Nabilah Hidayatun Uthaamih, Putri Dhiyaa