The research aimed to improve the achievement of learners on termochemistry subject in XI MIA class SMAN 1 Tanjungpinang. This research was a kind of experimental research with pretest-posttest design. The research was conducted in SMAN 1 Tanjungpinang the samples of the research were the students of XI MIA1 class as the experimental class and students of XI MIA2 class as the control class…