This study was conducted in order to examine the process by which teachers designed a website. For this purpose, www.weebly.com, which is used as a website building tool, was selected and teachers were given tasks for web designing. Experiments were designed differently for experiment and control groups. Before performing the tasks, an introduction video was shown to the experiment group. Then, interview questions about the contribution of introduction videos and usability of website were asked. According to the results, the group that watched the introduction video completed the tasks in a shorter time than the group who did not watch the videos. At the same time, the group who watched introduction videos before using the site was able to complete more tasks than the group that did not watch the videos. These results show that the use of introduction videos as a navigation facilitator enhances the usability.