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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Journal of Educational Sciences
Pertiwi, Nadia
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Development of Scientific Process Skill Assessment Instrument on Stoichiometry Using Rasch Model in the Merdeka Curriculum Pertiwi, Nadia; Aini, Faizah Qurrata
Journal of Educational Sciences Vol. 9 No. 1 (2025): Journal of Educational Sciences
Publisher : FKIP - Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.9.1.p.241-255

Abstract

The achievement of learning outcomes in the Merdeka Curriculum with respect to the assessment of scientific process skills remains unobservable. Teachers frequently conduct assessments that focus primarily on students' knowledge, while assessments targeting scientific process skills are rarely implemented. This is concerning because scientific process skills is part of the learning outcomes expected in the Merdeka Curriculum. Furthermore, there is a lack of assessment instruments in the form of tests that could assist teachers in measuring students' scientific process skills. This study used a research and development method using the Rasch model. The assessment instrument consisted of 24 multiple choice questions. The study involved three chemistry lecturers from the FMIPA at Universitas Negeri Padang, two chemistry teachers, and students from SMA Negeri 5 Padang as research subjects. Field test results were analyzed using Ministep software, which demonstrated that all items met the criteria for validity (based on outfit MNSQ, ZSTD, and Pt Mean Corr), reliability, varied difficulty levels (ranging from very difficult to very easy), and good item discrimination indices.
KAJIAN KARAKTERISTIK GENANGAN BANJIR KOTA PONTIANAK (STUDI KASUS PONTIANAK UTARA) Pertiwi, Nadia; Herawati, Henny; Umar, Umar
JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Vol 12, No 2 (2025): JeLAST Edisi Juni 2025
Publisher : JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jelast.v12i2.95897

Abstract

Pontianak Utara berada di dataran rendah dan dilintasi dua Sungai besar, yaitu Sungai Kapuas dan Sungai Landak, sehingga sangat rentan terjadi banjir atau genangan yang disebabkan oleh pasang surut, tingginya curah hujan, maupun kombinasi keduanya. Penelitian ini bertujuan untuk mengidentifikasi sumber, penyebab banjir serta karakteristik banjir yang terjadi. Pendekatan yang digunakan adalah metode deskriptif kuantitatif dengan analisis hidrologi berdasarkan data curah hujan maksimum dari stasiun Ptk-11. Hasil analisis menunjukkan bahwa intensitas curah hujan dan periode ulang memiliki pengaruh terhadap terjadinya genangan. Penelitian ini menggunakan data primer berupa dokumentasi wilayah genangan banjir dan koordinat titik genangan. Data sekunder mencakup informasi curah hujan, pasang surut, peta wilayah Pontianak Utara, serta data DEM. Penyebab genangan di Pontianak Utara dipengaruhi oleh perbedaan elevasi, pasang surut, dan tingginya curah hujan. Penelitian ini menghasilkan peta genangan yang dilengkapi dengan detail sumber penyebabnya. Genangan yang terjadi bersifat sementara dengan durasi hingga 4 jam. Fluktuasi muka air sungai turut memengaruhi aliran saluran, sehingga mengakibatkan hambatan dalam pembuangan air ke sungai utama. Kata kunci : curah hujan, genangan, karakteristik genangan, pasang surut
Co-Authors Aini, Faizah Qurrata Herawati, Henny Umar Umar