摘要：The study was report the findings of a n only post - test control group research design and aims to analyze the influence of problem - based learning approach, school level, and students' prior mathematical ability to student's mathematics critical thinking ability . The research subjects were 140 grade ten senior high school students coming fro m excellent and moderate school level . The research instruments a set of mathematic al critical thinking ability test, and the data were analyzed by using two ways ANOVA and t - test . The research found that the problem - based learning approach has significant impact to the ability of students' mathematics critical thinking in terms of school level and students ' prior mathematical abilities . Furthermore . T his research also found that there is no interaction between learning approach and school level, and learning approach and students' prior mathematics ability to students' mathematics critical thinking ability .
