development of problem-based learning device to improve metacognition ability

the research aimed to produce: (1) a valid, practical, and effective problem-based learning device development product; (2) students’ metacognition abilities improvements by using problem-based learning device that have been developed. this research is a development research. the development of problem-based learning device using 4-d models. the products that are produced in this study such as student text book, teacher guide book, lesson plan, student activity sheets, and metacognition ability tests. the subjects in this research were students of second year at state senior high school 2 binjai. the result of the first and the second trials are: (1) the problem-based learning device were met the valid, practical, and effective criteria; (2) there was an improvement of students’ metacognition abilities by obtained from the n-gain score in the medium category.