Master's thesis at the University of Basra discusses (Kagan models and their impact on the achievement and objective thinking of first-year middle school students in biology) The thesis presented by the student Ala Ayad Muhammad aimed to identify the impact of Kagan models on the achievement and objective thinking of first-year middle school students in biology. Thinking cannot be done without improving the level of achievement, and because objective thinking is an active mental process that does not occur in a vacuum, but rather from specific, intentional situations that a person practices in exploration and investigation represented by observation, classification, prediction, inference, understanding, analysis and control. The research sample consisted of (84) first-year middle school students, distributed into two groups, the first experimental group consisting of (42) students and the other control group consisting of (42) students. The experimental method was used here for two independent and equal groups, one of which was experimental and studied according to Kagan models and the other studied according to the usual method. The experiment was applied at the university's secondary school for girls, for a full semester, and to verify the research hypotheses, the test was applied The achievement test consists of (36) objective multiple-choice paragraphs, the second tool of the test is objective thinking, consisting of (24) paragraphs, including (21) objective paragraphs and (3) paragraphs of essay questions, and the results showed in favor of the experimental group. The master's thesis included Kagan models and their impact on the achievement and objective thinking of first-year middle school students in biology. The thesis concluded that the use of Kagan models helped raise and improve the achievement and objective thinking skills of the research sample, and that learning biology requires careful planning and interactive practice between the school and the student within an organized educational environment. In light of the research results, the researcher recommended the necessity of training biology teachers to use modern strategies and models in teaching by organizing training courses and workshops, in addition to the necessity of linking biology learning to reality and the importance of the student's transition from the abstract to the tangible through diversification of educational means and cooperative learning. It was also suggested to conduct a similar study for other academic stages
