This research start from students skills problem in teacher’s competency. Based on data, many students in Economics Education (who prepared to be teacher in the future) may not able to mentoring and asessing others. The purpose of this study is developing method of jigsaw that consist by peer mentoring and peer asessing. This study is Research and Development that adopt 4 steps (out of 10) Borg and Gall model. The study were done in 2nd semester 2015/2016 at “Student’s Pedagogical Development” class. Result of the study contain by factual model, hipotetical model, and final model. New sintax of jigsaw, lesson plan, and peer asessment instrument are parts of final model. Other lecture sugested to use this final model when they want improving mentoring and asessing skills on students.