This research investigates the effect of engineering design on the development of the engineering habits of mind among eighth grade students in the Sultanate of Oman. The study adopted the semi-experimental research design. The study sample had two experimental groups; the first group (23 students) was enrolled in a special program of engineering design; and the second group was a control group (25 students) which had not participated in any engineering design programs. The quantitative results revealed statistically significant differences at the level of significance ( between the performance of students of the two groups in identifying problem habits, optimization and development, and system thinking in favour of the experimental group in the scale of the habits of the engineering mind. However, there were no statistically significant differences between the performance of the two groups in the habits of visualizing, creativity in problem solving, and adaptation. Analysis of qualitative data reached similar findings. Taken together, these findings suggest a set of recommendations, including the integration of engineering design into science curricula for contribution to the development of engineering habits of mind. Further surveyed studies can be conducted to discover the most common engineering habits of mind among students of all stages in the study
