Effectiveness of the PjBL-STEAM-IC model in improving students’ environmental awareness in coastal schools

Authors

  • Srilesnawati Lalusu Universitas Negeri Gorontalo Author
  • Elya Nusantari Universitas Negeri Gorontalo Author
  • Frida Maryati Yusuf Universitas Negeri Gorontalo Author
  • Abubakar Sidik Katili Universitas Negeri Gorontalo Author
  • Hartono Mamu Universitas Negeri Gorontalo Author
  • Muhammad Rifai Katili Universitas Negeri Gorontalo Author
  • Masra Latjompoh Universitas Negeri Gorontalo Author

DOI:

https://doi.org/10.30862/jri.v6i1.6

Keywords:

Coastal school, environmental awareness, science learning

Abstract

Coastal ecosystem degradation in Pagimana District, combined with science instruction that remains largely theoretical, underscores to the need for a learning model that can foster students’ environmental awareness more comprehensively. This study examined the effectiveness of the PjBL-STEAM-IC model in improving students’ environmental awareness in coastal schools across the four KABS dimensions: knowledge, attitude, behavior, and skills. The study was part of a Research and Development project and specifically reports the field-testing phase, which included limited trials, wider trials, and operational implementation. Participants were 150 seventh-grade students from four coastal junior high schools in Pagimana District. Data were collected using an environmental awareness questionnaire and analyzed using descriptive statistics, N-gain, the Wilcoxon Signed-Rank Test, and the Kruskal-Wallis Test. The results showed that the PjBL-STEAM-IC model effectively improved students’ environmental awareness across all four dimensions. The mean score increased from 67.41 before implementation to 86.81 after implementation, with N-gain values ranging from 0.62 to 0.64, and all dimensions showed significant differences (p < 0.001). These findings suggest that the PjBL-STEAM-IC model is a promising contextual science learning alternative for strengthening environmental awareness in coastal schools.

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Author Biographies

  • Srilesnawati Lalusu, Universitas Negeri Gorontalo

    Doctoral Candidate in Science Education at Universitas Negeri Gorontalo, Indonesia.

  • Elya Nusantari, Universitas Negeri Gorontalo

    Professor of Biology Education at Universitas Negeri Gorontalo, Indonesia.

  • Frida Maryati Yusuf, Universitas Negeri Gorontalo

    Professor of Science Education at Universitas Negeri Gorontalo, Indonesia.

  • Abubakar Sidik Katili, Universitas Negeri Gorontalo

    Associate Professor in Biology Education at Universitas Negeri Gorontalo, Indonesia. 

  • Hartono Mamu, Universitas Negeri Gorontalo

    Associate Professor in Biology Education at Universitas Negeri Gorontalo, Indonesia.

  • Muhammad Rifai Katili, Universitas Negeri Gorontalo

    Associate Professor in Informatics Engineering at Universitas Negeri Gorontalo, Indonesia.

  • Masra Latjompoh, Universitas Negeri Gorontalo

    Professor of Science Education at Universitas Negeri Gorontalo, Indonesia.

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Published

22-05-2026

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