Wibowo, Widodo Setiyo, Ekosari Roektiningroem, Norma Bastian, and Karina Syahrul Hudda. 2018. “Development of Project-Based Learning Science Module to Improve Critical Thinking Skills of Junior High School Students”. Journal of Science Education Research 2 (2):71-76. https://doi.org/10.21831/jser.v2i2.22471.