The aim of the research was to know the effect of using the circular house strategy on the achievement of eighth grade students in Kurdish grammar and the development of scientific thinking among them. The researchers relied on a semi-experimental design of balanced pre- and post-test groups, where group (b) was the experimental group that received lessons through the circular house strategy with 40 students, and group (d) was the control group The number of students was (41). Both groups were randomly selected from eight groups in the Mardin school, and a comparison was made between the two groups. The researchers prepared an outcome test consisting of 30 items in the form of multiple choice and True and false, as well as a test for scientific thinking consisting of 25 items and psychometric characteristics derived for both tools. After the research was completed and the tools were practiced and statistical analysis was conducted using test, the experiment continued from (2/2/2025) to (8/5/2025). The researchers reached some conclusions and made some recommendations for conducting research in this field in the future

This research aimed to investigate the effect of using Karin's model on the achievement of fourth-grade students in the Kurdish Language Department in the subject of Literary Styles. The researcher adopted an experimental approach. The research population consisted of all fourth-grade students in the Kurdish Language Department, College of Basic Education, University of Duhok for the academic year (2024-2025), amounting (87) students, Section (A) with (44) students representing the experimental group that was taught using Karin's model, and Section (C) with (43) students representing the control group that was taught using the traditional method. The researcher conducted statistical equivalence between the two groups across several variables. The researcher prepared an achievement test consisting of three questions: the first question included (10) true/false items, the second question contained (15) multiple-choice items with four alternatives each, and the third question comprised (15) essay-type items. After completing the experiment, applying the research tool, collecting data, and conducting statistical analysis using t-test for independent samples, the researcher concluded that using Karin's model in teaching literary styles to fourth-grade students in the Kurdish Language students had a significant positive effect on student achievement compared to the traditional method. Based on the research results and conclusions, the researcher presented several recommendations.