ADDIE Buku Pengayaan Calon Guru Guided Inquiry Inkuiri Terbimbing Keterampilan Proses Sains Kimia LKS Learning Cycle 7E Model Pengembangan 4D Pedagogical Content Knowledg Pedagogical Content Knowledge Pendekatan Problem Solving Pengembangan LKS Penilaian Portofolio Pree-service Teachers Problem Solving Process Science Skill Question Category System For Science (QCSS) Reduksi Didaktik academic procrastination analisis pertanyaan berpikir kritis berpikir kritis siswa buku pelajaran kimia buku teks kimia chemistry education students; pandemi covid-19 covid-19 pandemic elektrokimia indeks keterlibatan siswa inkuiri terstruktur keterampilan berpikir kritis kimia learning process mahasiswa pendidikan kimia minyak bumi penyangga problem based learning berpendekatan SETS prokrastinasi akademik proses belajar science education self regulated learning self-efficacy self-regulated learning