Siska, Ayu2013-06-242013-06-242013-06-24http://repository.unri.ac.id:80/handle/123456789/3759Pemberian Materi Prasyarat Untuk Meningkatkan Prestasi Belajar Siswa Pada Pokok Bahasan Larutan PenyanggaResearch on the provision of material preconditions have been conducted to determine whether provision the material precondition can improve student achievement on the buffer solution subject in class XI SMAN 1 Pekanbaru. The research’s form is an experimental research with pretest-posttest design. The research was conducted on the even semester in academic year 2012/2013. The sample consisted of two classes, class XI Science 2 as the experimental and class XI Science 1 as the control class which randomly selected after tests of normality and homogeneity . Experimental class was treated by giving material precondition, while the control class was not given precondition material. Provision of material precondition was done to establish the precondition knowledge that students are more receptive to further learning. Data collection technique used is the test. Data analysis technique used is the t-test. Based on the results of the final data processing obtained t count > ttable, it is 3,08 > 1,67. This shows that the provision of material preconditions can improve student achievement on the buffer solution subject in class XI SMAN 1 Pekanbaru, the effect of an increase of 13.68%.en-USMaterial PreconditionsLearning Achievement and Buffer Solutionstudent Paper Post Degree