NMethodology and ProceduresStudy MethodologyThe researcher used the experimental approach that is based on twogroups, the first is the experimental group which adopted that TPS Strategyin learning mathematics, and the second is the control group studyingin the traditional way.Study PopulationThe study population consisted of all fifth grade students, totaling(2240) students, distributed over 65 classrooms in 11 Primary UNRWAschool in the Middle Governorates of Gaza Strip for the academic year(2015 - 2016).Study SampleThe researcher chose the sample from Deir Al Balah Boys ElementarySchool (B). The.;