Desilia, IsnaWahyu2013-07-192013-07-192013-07-19Nofianti,S.Pdhttp://repository.unri.ac.id:80/handle/123456789/4558Penerapan Model Pembelajaran Problem Solving Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Koloid Di Kelas XI IPAThe research on the application Problem Solving model is conducted at XI IPA class of SMA Muhammadiyah 1 Pekanbaru which is apllied on colloidal topic in 2013. The research is an experiment with pretest-posttest design. The sample consisted of two classes, named class XI IPA3 as the experiment class and the class XI IPA4 as a class control. Experiment class treated applied with problem solving model, while the control class was treated to as convensional. Data analysis technique used the t-test. The result of research showed tarithmetic >ttable (4.97 > 1.67) and n-gain is 0,71. It is high category. It means the application Problem Solving model can to increase learning achievement on colloidal topic at XI IPA class of SMA Muhammadiyah 1 Pekanbaruen-USProblem SolvingColloidLearning Achievement,student Paper Post Degree