Attachments have file size limits. While we would still encourage keeping file sizes small, if you do need to send a larger file, attachments have file size limits. For files larger than 10MB using a link should be a rule. Attachments can use up a lot of storage.
Welcome to TDOP. The Teaching Dimensions Observation Protocol (TDOP) is a customizable observation protocol can be used to produce robust and nuanced depictions of the dynamics that unfold among teachers, students, and technologies in the classroom.
Observation gives access to a wide range of data, including kinds of data whose existence the investigator may not have anticipated at the time he began his study, and thus is a method well suited to the purposes of the case study.