A quasi experimental research had been conducted to uncover the potency of STAD, TGT, STAD+ TGT, and conventional learning, on critical thinking skills of fifth grade elementary school students in Ternate-Indonesia. Research data had been analyzed in non-factorial ancova and pos-hoc analysis had been carried out in LSD test. Data analysis result showed that STAD+ TGT have highest potency to empower student critical thinking skills, followed by TGT and STA; conventional learning strategy had the lowest potency. TGT, STAD, and conventional learning had corrected critical thinking skills scores respectively 5.93%, 8.45%, 40.21% lower significantly than STAD+ TGT. It is strongly advised for teachers to use STAD+ TGT learning as well as STAD and TGT learning in their daily learning in order to empower critical thinking skills of students.