Zuliyaningsih, Elita Varia, Heny Dewi Koeswanti, and Sri Giarti. 2018. “PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING (PBL) UNTUK PENINGKATAN HASIL BELAJAR IPA KELAS V SEMESTER II SD NEGERI BOTO 02 TAHUN PELAJARAN 2017 2018”. JTIEE (Journal of Teaching in Elementary Education) 2 (1):47-57. https://doi.org/10.30587/jtiee.v2i1.355.