The research aimed to teach physics according to the model of David Merrill in providing students of the fifth grade applied scientific with the skills of solving the mathematical problem, and to achieve the goal of the research the researcher formulated a main zero hypothesis that included three sub-hypotheses each. To verify the hypotheses of the research, an intentional sample of students of the fifth grade of applied scientific at Amer Abdullah Applied High School for Boys in Mosul was selected for the academic year (2021- 2022) and its total number reached (60) students. Al-Andalus Preparatory School for Girls in Mosul for the academic year (2021-2022) has reached (66) female students of the fifth grade of applied science, and this sample was distributed among four divisions, two of which are officers and two of them are experimental by (30 males and 33 females) for the two experimental groups and (30 males, 33 females) for the two control groups, and the researcher has conducted the process of equivalence between the members of these four groups in a variable (physics degree for the fourth scientific grade).