This research focuses on the effect of the Teams Games Tournament (TGT) cooperative learning model using the Monopoli Akuntansi (MONAKU) learning media on students' critical thinking skills in the accounting subject for trading companies. The study employs a quasi-experimental method with a non-equivalent control group design, using a sample of two randomly selected eleventh-grade accounting classes at SMK Negeri Jumantono. The results show that the implementation of the TGT cooperative learning model with MONAKU media significantly enhances students' critical thinking skills compared to the discovery learning model. Independent t-tests and N-Gain tests support these results, both indicate a higher average increase in critical thinking scores in the experimental class. Accordingly, the TGT cooperative learning model using MONAKU media positively affects students' critical thinking skills in the practical accounting subject for Service, Trading, and Manufacturing Companies (APJDM).