higher order thinking skills as effect of problem based learning in the 21st century learning

This study aims to determine the responses of learners to learning using a scientific approach in problem based learning integrated with the inculcation of critical thinking, communicative, collaboration; and creative (4c skills) in 21st century learning. the design of this study is true experiment by using posttest only control design. the sample of the research is vocational school students selected by using cluster random sampling technique in surakarta, indonesia. the techniques of collecting data are using tests whose validity, reliability, level of difficulty, and the discrimination index have been tested. the data obtained are then tested using t test. the result of the research shows that higher order thinking skills of experimental class students learning using scientific approach in problem based learning which is integrated with the inculcation of 4c skills are higher than those of the control class that are learning using scientific approach in think-pair-share which is integrated with the inculcation of 4c skills.