This research was conducted with the aim to know the influence of Probex
learning models to student activity subject biology X grade SMA Negeri 1
Rawalo school year 2016/2017. The study population is all students of class X
SMA Negeri 1 Rawalo which is distributed in 8 classes. The method used in this
research is experimental method with cluster random sampling. The subjects of
this study were students of class X IPA 5 (experimental class) and X IPA 4
(control class). The data studied in the form of student activity that include
questioning activities, answering questions, submitting opinions, responding
opinions, and concluding. Technique of data analysis using correlation test and
continued t test to know level of significance at 95% level of trust. Result of
correlation test of Probex learning model to student activity showed significant
relationship. Based on the results of this study can be concluded that the learning
model Probex positive effect on the student activity of students class X SMA
Negeri 1 Rawalo on biology subjects.