Abstract This research was aimed to know the feasibility and response of students toward Student Worksheets (LKPD) based on Teams Games Tournaments (TGT) on three dimensional materials in class XII at SMA Negeri 1 Kuala Mandor B. The form of research used is R & D (Research and Development). The development steps used in the research were: conducting preliminary research, designing, developing initial product types / forms, conducting initial field trials, revising products, conducting main field trials, and revising operational products. The data technique used was indirect communication techniques using feasibility questionnaires and student questionnaires to student worksheets (LKPD) based on Teams Games Tournaments (TGT). The descriptive research data, it was found that the average feasibility of student worksheets (LKPD) based on Teams Games Tournaments (TGT) was 92.705% with very high criteria and the average student responses to the initial field trials and main field trials were 82.35% and respectively. 83.67% with very high criteria. Keywords: Development, Student Worksheet (LKPD), Teams Games Tournaments (TGT), Three Dimensional Materials
