The aim of the paper is to measure the effectiveness of a proposed teaching strategy based on the theory of successful intelligence in developing creativity skills in mathematics among primary school students. To achieve this aim, the researcher employs a semi-experimental approach and designs one group of pre and post-test. The researcher carries out the test of creative thinking in mathematics. He also builds a teaching strategy based on successful intelligence to develop creative skills in mathematics among primary school students. This strategy was applied to the research sample students, which numbered 35 male and female students from the fifth grade of primary school. To measure the effectiveness of the strategy, the test was applied remotely to the research sample. The results showed that there is a statistically significant difference at the level of significance (0.05) between the mean scores of the experimental group students in the pre and post-tests to test creativity skills in mathematics after successful intelligence-based teaching in favour of the posttest.