The current study aimed to measure the effectiveness of teaching science using the STEM approach in developing creative thinking and correcting alternative conceptions among fourth-grade students in North Al Sharqiyah Governorate. The researcher followed a quasi-experimental design with two groups (experimental and control), and the study sample consisted of 62 male and female students from the fourth grade at Al-Adrak School for Basic Education. The study instruments included a test of creative thinking and a test of alternative conceptions of scientific concepts. The research results revealed statistically significant differences at the significance level (α ≤ 0.05) between the mean scores of fourth-grade students in the experimental and control groups in the post-test of creative thinking and the test of alternative conceptions of scientific concepts in favor of the experimental group. Considering these results, the study recommended conducting training programs and lectures to emphasize the importance of utilizing the STEM approach in teaching sciences and other subjects at the school or governorate levels. It also suggested developing teachers' attitudes in specialized training institute programs towards using the STEM approach in classroom sessions, as well as organizing workshops and training courses for teachers to train them on teaching with a STEM approach. Keywords: STEM Approach, Creative Thinking, Alternative Conceptions