The effect of "Conscious Consumer Arithmetic" lesson plans prepared based on the mastery learning model on the academic achievement of students and investigation of this effect using the fishbone technique

In this study, it was aimed to reveal the effect of the subject of "Conscious Consumer Arithmetic" related to the sub-learning area of equations and inequalities in the 11th grade mathematics course program on the academic achievement of the students in the mathematics course with the lesson plans prepared based on the mastery learning model and was aimed to demonstrate this effect with the fishbone technique. The participants of the study were 62 students studying in four branches of the 11th grade of a state school in the central district of Bartin province in the 2018-2019 academic year. In the study, the experimental method "pre-test- post-test control group model" was used. When the achievement test results used for cluster analysis and the students' grade point averages of 9th and 10th grade were evaluated, it was observed that the branches were suitable and equivalent groups for research. During the five-week period, the subject of "conscious consumer arithmetic" was explained to the students in the experimental group using the complete learning method, and the control group students were taught the same subject with the methods prescribed in the existing curriculum. As a result of the study, it was determined that teaching with lesson plans prepared based on the mastery learning model had a significant effect on the academic achievement of high school students in mathematics lesson, and the factors found in to have a role in this effect were revealed by the fishbone technique.