The objective of this work is studying the effectiveness of constructivist Bybee model on morale, cognitive achievement and some hoop skills performance level in rhythmic exercises. The experimental approach was used in a pre and post-measurement method, where the research sample represents 60 female students from the second year of the Faculty of Physical Education for Girls, Zagazig University for the academic year 2022 / 2023 AD, the sample (60 female students) was divided into two equal groups, each of 30 female students, ten female students from the academic class as a third group to conduct exploratory experiments. The most important results obtained were: 1- There are significant differences and relative improvement between the average of pre and posttest measurement on morale, cognitive achievement and some hoop skills performance level in rhythmic exercises to experimental group in favor of the post measurement 2- There are significant differences and relative improvement between the average of pre and posttest measurement on morale, cognitive achievement and some hoop skills performance level in rhythmic exercises for the control group in favor of the post measurement. 3- There are significant differences and relative improvement between the average of two posttest measurement for control and experimental group on morale, cognitive achievement and some hoop skills performance level in rhythmic exercises for experimental group.