Interactive whiteboards electronically capture your voice and handwriting to bring to life just-completed stories in your comprehensible input classes. Students can use the iPad to visually recreate stories in much the same way that the classroom artists currently do. If a class has access to an iPad, the artist will certainly want to use it to draw the story.
Once the panels of the drawing are complete, the student working with the iPad hands it to the teacher who then records her voice throughout what is really an electronic comic strip to produce a narrated story that is then shared with the students at the end of class. A written story line can be added onto each panel as well.
In theory, if all the students in the classroom had iPads, they could all produce a version of the story, but that would be extremely difficult to narrate and process. It would also pull the attention of the students away from the story during its creation. Multiple iPads, however, could be used in assessment. At the time of this writing, interactive whiteboards are relatively new, so individual teachers will use them in the way that they feel is best for their own classroom.