The research aimed to identify the effect of using the inverted learning strategy on the mental flexibility and the level of performance of some basic skills in karate (Jidan Bray - Oi Zuki - Agi Oki - Soto Oki - Soto Oki - May Jerry - livestock Jerry - Yoko Jerry), and the researcher used the experimental method on A sample of (50) students in the second year of the Faculty of Physical Education for Girls - Zagazig University, They were divided into two equal groups, one experimental and one control each consisting of (25) students. Research tools include Physical tests - Evaluating the level of performance of some basic skills in Karate - High intelligence test - educational program using inverted learning strategy. The statistical treatments used are arithmetic mean - standard deviation - median - torsion coefficient - simple correlation coefficient - T - test - improvement rates. Results: 1 - Inverted learning strategy has a positive impact statistically significant at the level (0.05) on mental flexibility and the level of performance of some basic skills in Karate for the second-year students of the Faculty of Physical Education Girls - Zagazig University. 2 - The method of learning by order (the usual method) has a positive impact statistically significant at the level (0.05) on the level of performance of some basic skills in Karate for the students of the second year of the Faculty of Physical Education Girls - Zagazig University. 3 - learning method does not have a positive impact statistically significant at the level (0.05) on mental flexibility. 4 - The members of the experimental group were statistically significant on the members of the control group in mental flexibility and the level of performance of some basic skills in Karate under consideration.