Abstract:
This research aimed to (1) test the effect of inquiry based learning toward learning outcome of cognitive product and cognitive process, (2) test the effect of inquiry-based learning toward critical thinking skills. Implementation this model using the quasi-experimental. The independent variable was inquiry-based learning while the dependent variables were learning outcome of cognitive product, cognitive process, and critical thinking skills. This research population was grade 11th students from SMA Negeri 1 Sungai Tabuk i.e. XI IPA-1, XI IPA-2, and XI IPA-3. This research samples for implementation of inquiry-based learning toward learning outcomes for the first treatment classes were XI IPA-2 and XI IPA-3, while the control class was XI IPA-1. The second treatment classes were XI IPA-1 and XI IPA-2, while the control class was XI IPA-3. The treatment classes were determined by using purposive sampling technique. This research samples for implementation of inquiry based learning toward critical thinking skills were XI IPA-2 and XI IPA-3, while the control class was XI IPA-1. This research was held for 3 months. The instrument to measure the cognitive product and cognitive process consisted of multiple-choice test and the critical thinking skills consisted of essay test. The data were analyzed by using anacova SAS release 9.1.3. The results are (1) inquiry base learning has effect to learning outcome of cognitive product and cognitive process, (2) inquiry base learning has no effect to the ability to apply, but has effect to the ability to analyze and the ability to evaluate.
