Handayani, U., Sumaji, and Khamdun. “The Effectiveness of PBL and PjBL Models on Students’ Science Learning Outcomes in Material Properties of Elementary School Students”. Uniglobal Journal of Social Sciences and Humanities, vol. 3, no. 1, July 2024, pp. 144-9, doi:10.53797/ujssh.v3i1.22.2024.