Sumandya IW, Widana IW. Reconstruction of Vocational-Based Mathematics Teaching Materials using a Smartphone. J. Educ. Technol. [Internet]. 1 Maret 2022 [dikutip 5 April 2025];6(1):133-9. Tersedia pada: https://ejournal.undiksha.ac.id./index.php/JET/article/view/42833