The purpose of this research is increase the integrated thematic learning by using Problem Based Learning (PBL) model in class V C at SD Kartika I-11 Padang. The subject of this research is researcher as a teacher and student of class V C is 22 people. The result of this research point out uprading such as: (a) RPP in 1st cycle, the result score average is 77,78% (C) and 2nd cycle become 94,4% (AB). (b) Assesment of teacher aspect in 1st cycle is 78,57% (C), as the result score average and 2nd cycle become 96,42% (AB). Assesment of student aspect in in 1st cycle is 78,57% (C), as the result score average and 2nd cycle become 96,42% (AB). (c) The result of students score in 1st cycle is 70,57, as a score average and 2nd cycle become 94,93. It indicates that the integrated thematic learning is improved by using Problem Based Learning (PBL) model.Keywords: Problem Based Learning; Integrated Thematic