<![CDATA[The purposes of this research are to discover the influence of learning model and learning motivation on concepts understanding and critical ability of students class XII at SMK Hasanuddin Aviation in Makassar on Colloidal System Subject. This research is quasi experiment research with 2x3 factorial design. The research populations were all the students in class XII at SMK Hasanuddin Aviation in Makassar. The sample was selected by employing random sampling with dependent variables and obtained class XII of Electrical Avionic learned by guided inqury model and class XII Airframe and Powerplant learned by using project based learning. The hypothesis test was conducted by using descriptive and inferential statistical analysis. The results of this research reveal that: (1) there is influence of guided inquiry model learning and PjbL on students’ concepts understanding; (2) there is influence of guided inquiry model learning and PjBL on critical thinking ability of students; (3) there is influence of high motivation, medium motivation, and low motivation learning on students’ concept understanding; (4) there is influence of high motivation, medium motivation, and low motivation learning on critical thinking ability os students; (5) there is no interaction between learning model and learning motivation on students’ concept understanding; (6) there is no interaction between learning model and learning motivation in influencing critical thinking ability of students.]]>
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