The aim of this study is to explore the learning effect of a front crawl swimming course integrating float-gliding skills. Seventeen male students from the Department of Physical Education, NTTU who attended a swimming course participated in this study. The students were given 50m front crawl pre- and post-test, 200m and 400m continuous front crawl tests in the middle and in the end of the semester, respectively. Besides, students also took a cognitive and affective assessment about swimming instruction. The swimming class last 100 minutes every week. Float-gliding was integrating into the instruction by 2 stages. The first stage lasted for 4 weeks, in which period of time students practiced 8 kinds of float-gliding skills for 60 minutes each week. The second stage lasted for 8 weeks, in which period of time students practiced 5 kinds of float-gliding skills (3 rope-pulling skills were exclude) for 25 minutes each week. Eight weeks of regular front crawl swimming lessons were given to the students thereafter. Action research was employed and the data were collected by a “Cognitive and Affective Scale on Swimming Instruction” developed by this researcher. All of the swimming tests were video-taped for further analyses. The video were coded by the criterion of 1) the time and strokes of 50m swimming, 2) the time and distance per stroke, 3) the time of 200m and 400m continuous crawl stroke swimming. Descriptive statistics were presented and the dependent-sample t-test was used for statistical analysis. Findings are: 1) The numbers of strokes in the first 25m and second 25m of the 50m swimming reduced significantly (23.1<21.5, p=.05, 25.1<22.8, p<.05, respectively). 2) The 50m swimming time did not differ significantly. 3) The stroke time of the first 25m and the second 25m in the 50m swimming did not differ significantly, but the distance per stroke differed significantly statistically (1.02 <1.13 m, p<.05). 4) Of all the participants, 94.1%, completed 200m continuous swimming and 82.4% finished the 400m continuous swimming. It seems that although the distance and swimming time showed no significant differences, the average number of strokes in the 50m swimming reduced, which indicates longer distance per stroke. It is concluded that integrating float gliding skills in the front stroke swimming lessons can improve stroke frequency and facilitate longer distance swimming.