Pengaruh Model Pembelajaran Berbasis Proyek Terhadap Prestasi Belajar Kimia Siswa Kelas XI IPA Sman 1 Narmada Tahun Pelajaran 2013/2014

: The objective of the research was to know the effect of Project-Based Learning towards the student's chemistry learning achievement class XI IPA of SMAN 1 Narmada in 2013/2014 academic year. This research used a quasi-experimental research design with the design of post-test only control group design. Sampling was done by cluster random sampling technique because members of populations have homogeneous based on data value semester exams of class XI science students. Class XI IPA 1 as experimental group was threated by project-based learning model and class XI IPA 3 as control group was threated by conventional learning models. Post test is used as an basic instrument. In addition, the portofolio is as a second instrument of this research.. The results of post-test hypothesis test using a different test (t-test) with a significance level of 5% showed tacc (4.105)> ttable (2.000) so that H0 is rejected. Hypothesis testing is also performed on the results of portfolio show tacc (2.89)> ttable (2.000). Based on these results, we can conclude that project-based learning model provides give a better effect than the conventional models of the student's chemistrylearning achievement class XI IPA of SMAN 1 Narmada in 2013/2014 academic year