Kartimi, Ari Syahidul Shidiq, and Dindin Nasrudin. “The Elementary Teacher Readiness Toward STEM-Based Contextual Learning in 21st Century Era”. Elementary Education Online 20, no. 1 (March 16, 2021): 145–156. Accessed June 3, 2024. https://ilkogretim-online.org/index.php/pub/article/view/3586.