The study investigated the efficiency level of using cooperative learning strategy (small groups) via teaching Arabic text instruction on developing critical thinking and social communication skills needed for interaction within the same group of students. To achieve this objective, a random sample of students from Rabea\' Al Adawyya school for girls from Irbid the First Educational Directorate was selected (N=59) and was distributed on 2 groups: experimental group which consist of (30) students and a control group (29) students. The researchers used California Test/ 2000 version adapted for the Jordanian environment to measure critical thinking skills (inference, assessment, analysis, drawing conclusions and deduction). Furthermore, the researchers designed a checklist to measure students\' acquisition level of communication skills. Reliability and validity were obtained for the study instruments. Results indicated statistically significant differences (α = 0.05) in study subjects critical thinking and social communication skills due to the use of small groups cooperative learning strategy.