Rahayu NT, Fatmaryanti SD, Pratiwi U. Perancangan Alat Peraga Tumbukan Menggunakan Sensor Ultrasonik HC-SR04 Berbasis Multirepresentasi. JIPS [Internet]. 2021May6 [cited 2024Nov.22];2(1):1-. Available from: https://jurnal.umpwr.ac.id/index.php/jips/article/view/590