Critical Thinking skills of students senior high school Newton 's laws materials and application

This study aims to describe the development of the Critical Skills Thinking Matter Newton's Law on Student SMAN 9 Makassar. To see the development of students' critical thinking skills seen from gain score of students before and after treatment. The results of inferential analysis showed significant differences between the experimental class (using model of Fostering Critical Thinking Skills/FCTS) the control class. This means FCTS learning model, can significantly raise high school students' critical thinking skills. Judging the amount of the effect (effect size), by calculating the difference between the average gain score critical thinking skills of students who are taught by learning model of FCTS of 0.26 and average critical thinking skills of students who are taught by without learning model of FCTS at 0.11 divided by the standard deviation the control group of 0.05. The result of the calculation is found that the magnitude of the effect of the use of the learning model of FCTS on learning of physics in order to foster critical thinking skills is 3:00 compared to learning without learning model of FCTS (control group). That is about three times larger than the average students' critical thinking skills that are taught without using model of FCTS. This indicates that the use of models of learning in the process of learning physics FCTS give effect to the development of students' critical thinking skills