This study aimed to investigate the effect of using K.W.L. in acquiring religious concepts among 8th grade students in Jordan. The study sample consisted of 139 students (4 sections) the sections were chosen randomly from 8th grade students from Tafila Directorate of Education. 2 sections formed the experimental group (1 section for males and 1 section for females) they were taught using K.W.L. strategy, while the control groups were consisted of 2 sections 69 students (1 section for males and 1 section for females); they were taught by using the ordinary teaching strategy. The result indicated that the difference in achievement was statistically significant in favor of experimental groups (a = 0.05), and there was no statistical significant differences in achievement attributed to gender or to the interaction between gender and the teaching strategy.