Joan Silva Setyowati, Karnawati, Tjie Fu Sien. Implementation of Project-Based Learning Using Recycled Materials to Improve Learning Outcomes and Teamwork Attitudes in Christian Religious Education for Grade 5 at Immanuel Christian Elementary School Semarang. PJTPAK [Internet]. 2024Nov.30 [cited 2025Jan.14];20(2):129-3. Available from: http://journal.stbi.ac.id/index.php/PSC/article/view/368