Judith, There are so many media choices these days, it's like we have to narrow down to only those that are most effective in conveying the needed information. Variety is good, in that it inhances the interest and engagement of students. That said, using materials that students use as short cuts or bypass the intended learning pathway would not be a desirable activity Too much of one activity can lead to disinterest or classes that are not enjoayable to be attending for very long. Barry Westling