The influence of Gagne and five leveled BybeeInstructional design models in Web-based Instruction on the learning and retention of students

The purpose of this research was to examine the influence of Gagne's and five leveled Bybeesinstructional design models on the learning and retention of students in web-based instruction. The research population was all BCS students of Instructional Technology from AllamehTabatabaiUniversity inthe academic year of 1388-89 and 32 students were chosen by available sampling. After pretest, these 32 students were randomly divided into two groups. Gagnesinstructional design model on one group and Bybeeinstructional design model on another group was performed; and then post-test was given to both groups.After three weeks learning post-test as a retention test was exactly repeated for two groups. According to the research questions, the results showed that (a) there was a significant difference between the learning of students that were instructed by Bybeesinstructional design model and those of Gagnesinstructional design model and the learning of students taught by Bybeesinstructional design model was more than students trained by Gagnesinstructional design model;(b) there was a significant difference between retention of students that were taught by Bybeesinstructional design model and those that were instructed by Gagnesinstructional design model and the retention of students taught by Bybeesinstructional design modelwas more than students trained by Gagnesinstructional design model.