Optimal line length for reading schoolbook on screen

Although experimental studies have shown a strong impact of text layout on the legibility of e- text, many digital texts appearing in eBook or the internet use different designs, so that there is no straightforward answer in the literature over which one to follow when designing e- material. Therefore, in this paper we shall focus on the text layout, particularly the influence of line lengthen reading performance of e-school book.48 native Arabic students (24 male and 24 female) volunteered for this experiment. The participants’ age ranged from 9 to 13. Performance of students was assessed through two dependent variables: (1) time to complete each tasks; and (2) accuracy of the answers. Accuracy data was based on the number of correct answers the students provided and the total score was 12 points. Several findings were reported by this experiment such as; the time needed to complete all the question models becomes significantly low when students are older, errors for all the question models are expected to be significantly lower for older students. Reading text on a single column with double columns shows that the reading process is affected by the students’ age, as older students were faster when reading through double columns, while students aged 9 prefer the single column in both reading processes. The study has recommended double line for fast reading for students their reading performance is satisfactory. While, long line has suggested for students with difficulty in reading.