The study aimed to identify the impact of the Know, Want to know and Learn (KWL) strategy on the acquisition of scientific concepts in science among the third grade students in the directorate of education of Irbid. The semi-experimental method was adopted and the study sample consisted of (60) male and female students from the third grade from Irbid's schools; they were distributed into two groups: control group consisting of (15) male students and (15) female students and experimental group consisting of 15 male students and 15 female students. The results showed statistically significant differences for the variable of the group in the post-test in favor of the experimental group, whose members were taught through using the (K.W.L), statistically significant differences for the variable of gender in favor of the females and no statistically significant differences in the post-test. The researcher recommended adopting a teaching method through using the cognitive maps in teaching science due to their impact on acquiring the scientific concepts.