Pre-Service Chemistry Teachers’ Preconceptions about Rare Earth Coordination Chemistry: Results from an Explorative Interview Study

Abstract

This research aims to identify students' preconceptions about rare earth coordination chemistry. The method used in this research is exploratory interviews. This research involved 25 pre-service chemistry teacher at a university in West Java Province, Indonesia. The collected data was analyzed using qualitative content analysis. The research results showed that 60% of students were able to identify electronic waste as a source of valuable metals, but others did not know that there were rare earth metals contained in it. As many as 32% know ionic liquids as environmentally friendly solvents, but the majority of students do not understand the physicochemical properties of ionic liquids and the interactions between ionic liquids and rare earth metals. As many as 8% of students were able to explain the reaction to form rare earth metal coordination compounds correctly, while only 4% were able to explain the concept of luminescence in these compounds. These findings indicate the need for coordination chemistry course design that accommodates students' learning needs and links them to relevant environmental contexts to improve students' understanding and systems thinking skills.Salah satu landasan pengajaran yang baik adalah mengetahui prakonsepsi siswa. Prakonsepsi diperlukan untuk merancang pembelajaran kimia berdasarkan kebutuhan belajar dan kesulitan selama proses pembelajaran. Penelitian ini bertujuan untuk mengidentifikasi prakonsepsi siswa tentang 'kimia kompleks koordinasi logam tanah jarang'. Berpikir sistem juga menjadi fokus penelitian ini, karena mempunyai peran penting dalam menghubungkan konsep isi dengan konteks. Penelitian ini melibatkan 25 calon guru kimia di sebuah universitas di Provinsi Jawa Barat, Indonesia. Metode yang digunakan adalah wawancara eksploratif. Panduan wawancara dan lembar pendukung wawancara disiapkan ketika siswa mengalami kesulitan dalam memahami pertanyaan. Data yang terkumpul dianalisis menggunakan analisis isi kualitatif. Hasil penelitian mengungkapkan bahwa siswa kesulitan menghubungkan senyawa kompleks koordinasi dan konteks terkait kandungan logam dalam limbah elektronik, pelarut ramah lingkungan, reaksi pembentukan senyawa kompleks koordinasi antara logam tanah jarang hasil pelindian dan ligan, serta pertambangan perkotaan berkelanjutan. seperti mempelajari kimia kompleks koordinasi. Sebagian besar mahasiswa sangat setuju bahwa desain perkuliahan pada topik senyawa kompleks koordinasi logam tanah jarang dikaitkan dengan konteks pembelajaran.