The use of visuals (e.g., videos, animations) to promote learning has been of great interest to researchers and educators. A key challenge is to determine the extent to which cognitively-based, instructional supports (e.g., prompts, feedback) can promote deeper understanding when students learn with visual materials. In this research, we explored the effects of deep vs. shallow questions on ind...

The silent films of the early 1900s had a huge audience, hearing and deaf, for public entertainment and instruction. The advent of "talkies," however, excluded deaf people from this means of access to mainstream American culture. In response to a new need for both captioned educational and entertainment films for deaf people, Congress passed Public Law 85-905 in 1958, which established Captione...

Nowadays, the video documents like educational courses available on the web increases significantly. However, the information retrieval systems today can not return to the users (students or teachers) of parts of those videos that meet their exact needs expressed by a query consisting of semantic information. In this paper, we present a model of pedagogical knowledge of current videos. This kno...