The background of this study was about result of students’ mathematic study which less, it can be seen from students’ Mathematic daily test which under KKM which is 70 and Final Test Semester students which the lowest score was 50 and Teachers only used talk method in learning process. That problem was solves by using Cooperative Learning types of Course Review Horay, so that the result of students mathematic increase and fulfill the KKM.The Statement of the problem was is there any significance different in students’ mathematic result grade 5^th in Elementary School Nyalembeng Pemalang by using Cooperative Learning type Course Review Horay. The objective of this study was to what extent is there any significance different in students’ mathematic result grade 5^th in Elementary School Nyalembeng Pemalang by using Cooperative Learning type Course Review Horay. This Metodology of this research used experimental quantitative, which used pretest and posttest. The research design used pre-eksperimental design with one-group pretest-posttest design model.  The analysis instrument used was validity, reliability, level difficulty, and distinguishing. Technique of analysis data which the researcher used was postest , pretest, dan  hypothesis test which used  testt.The result of analysis used t test got t_hitung=25,171, which is t_tabel in difficulty level 5% was 1,706. Because t_hitung= 25,171 >t_tabel=1,706, so Ho was ignore and Ha accept. In conclusion Cooperative Learning type Course Review Horay had significance in students’ mathematic result grade 5^th in Elementary School Nyalembeng Pemalang.The suggestion that the researcher can suggest is Cooperative Learning type Course Review Horay can be used as alternative teaching in increasing students learning especially in mathematic.