The current study aims to investigate the extent to which computer-based language learning can develop preparatory stage students' reading comprehension skills. The study adopted the pre-experimental one group pre-post administration design. The study was applied to a voluntary group (N = 31) from preparatory stage students in Saray El-Kobba Governmental school. Reading comprehension skills pre-posttest was administered to determine the participants' most needed comprehension skills. The sessions of the unit were developed based on students' most needed reading comprehension skills “skimming and scanning". The unit was administered to participants in a two-week practicum block following the blended learning model (online and on-site teaching). Paired t-test was used to measure the effect of the unit on the students' skimming and scanning skills. Results revealed that the unit was effective in developing students' skimming and scanning skills as there were statistically significant differences between the pre and post administrations of the test in favour of the post administration.