There are many scholars who have argued that the choice of task is fundamental to opportunities for student problem solving and reasoning. Anthony and Walshaw (2009), for example, in a research synthesis, concluded that “in the mathematics classroom, it is through tasks, more than in any other way, that opportunities to learn are made available to the students” (p. 96). Similar comments have been made by Ruthven, Laborde, Leach, and Tiberghien (2009) and Sullivan, Clarke,and Clarke (2013).