Abstract
The problems contained in this study are students who have difficulty in mathematics content, especially in the cube volume material due to the lack of variation in learning, students have difficulty in absorbing material, and passive students in learning activities. This research is a CAR with 3 meetings, where the purpose of this study is to determine the activities of educators, students' critical thinking skills and learning outcomes through the application of the INTAN model. The results show an increase, namely for educator activities to achieve a maximum score with a percentage of 100%, with a very good category. For activities, students get percentages from 33.33% to 100% with Active and Very Active categories, critical thinking skills get percentages from 46.67% to 100% and learning outcomes from 20.00% to 100%. It can be concluded that the INTAN model is able to make students active and their learning outcomes increase both individually and as a whole.