<![CDATA[Critical thinking and problem-solving skills in students can be influenced by teacher creativity in choosing learning models and creating an interesting learning atmosphere. However, in fact the level of critical thinking and problem-solving skills in students is still relatively low. Therefore, a learning model is needed that can help improve critical thinking and problem-solving skills in students, one of which is the jigsaw-type cooperative learning model. This research uses a quantitative approach with the type of research Quasi Experiment Design. The population in this study were all fourth-grade students at MIN 3 Tulungagung, totaling 81 students. Sampling was done by purposive sampling technique. The samples selected as research subjects were students of class IV-B as a control class totaling 27 people and class IV-C as an experimental class totaling 27 people. Data collection techniques were used using tests and observations. Data analysis techniques used are 1) prerequisite tests (normality and homogeneity tests) and 2) hypothesis tests (t-test and MANOVA test). The results of this study indicate that 1) there is an effect of the application of the jigsaw-type cooperative learning model on critical thinking skills as evidenced by the results of the t-test of critical thinking skills obtained a sig. (2-tailed) value of 0.001 <0.05, then H01 is rejected and Ha1 is accepted; 2) there is an effect of the application of the jigsaw-type cooperative learning model on problem-solving skills as evidenced by the results of the t-test of problem-solving skills obtained a sig value. (2-tailed) of (<0.001) <0.05, then H02 is rejected and Ha2 is accepted; and 3) there is an effect of the application of the jigsaw-type cooperative learning model on critical thinking and problem-solving skills as evidenced by the results of the MANOVA test of critical thinking and problem-solving skills obtained a significance value of (<0.001) <0.05, then H03 is rejected and Ha3 is accepted.]]>
