In prior research and development, the team developed WuzzitTrouble, an iPhone and iPad gaming app where players solve problems using number sense mathematical strategies. This project will develop and test a prototype of an adaptive engine for this game, intended to tailor gameplay to the skill levels of individual students and to provide support (or scaffold learning) for students with weaker skills. The Phase I pilot will involve six Grade 6 classrooms and 100 students. The study will examine whether the prototype functions as planned, and if students of different skill levels are engaged and able to play the game with the support of the prototype’s adaptive engine.