Ropii, Nurhasan, Wahyu Hardyanto, and Ellianawati Ellianawati. 2019. “Guided Inquiry Scratch Increase Students’ Critical Thinking Skills on the Linear Motion Concept: Can It Be?”. Jurnal Penelitian & Pengembangan Pendidikan Fisika 5 (1):63-68. https://doi.org/10.21009/1.05107.