When a second-grade class struggled to make sense of the algorithms for multidigit addition and subtraction, attitude and morale were down, and student discourse was at an all-time low. When daily mathematics class started, the teacher was hearing an overall class moan. The instructed needed to turn it around, to find a way to help excite and motivate students while also deepening their understanding of this clearly difficult mathematics content. The purpose of this article is to share a strategy that helped get the math class back on track. In class, they called the strategy "Get the Goof." It is a simple yet effective strategy in which a teacher presents a flawed solution to a math problem and students work together to identify the goof and fix it.