The Effectiveness of Cooperative Learning Models Tai and Stad Type in Improving Student's Critical Thinking

This study aims to determine the level of effectiveness thecooperative learning model type TAI "Team AssistedIndividulization" and STAD "Student Teams AchievementDivisions" as a in improving critical thinking ofelementary school students class V science subjects. Thisexperimental research was form Quasi ExperimentalDesign. The design used is quasi-experimental researchusing nonequivalent control group pattern. researchis an experimental conducted at SD Negeri Polobogo 03and 02 which are located Village.The from February March secondsemester academic year 2021/2022 carried out inclass V. samples this were obtained through probabilitysampling techniques with purposive random sampling type. Basedon results, cooperative learningmodel Assisted Individulization" showed anaverage increase 28.57% greater than Achievement Divisions" whichwas 26.75%. Based on results hypothesis testusing mean difference test independent sample t-test, itshows that there significant between cooperativelearning andthe TeamsAchievement terms ability results. thinkingof