“…In the category of math, the first differentiation of dependent variables was to identify, write, and comprehend the quantity of numbers from 1 -7 [6], and independent comparisons of grocery item shopping [18], independently completing math tasks on assessments [13], the presence of noncompliant behaviors during assessment [13], and, finally, the level of teacher prompting during the assessment [13]. The second category related to engagement in literacy and math was literacy regarding checking spelling [7], the number of play dialogue utterances [10], independent correct responses on story analysis [15], unprompted correct responses to listening and comprehension questions [15]. Enhanced communication skills were also examined by studies targeting AAC users [8,9,16,14,15,17,20].…”