Students' understanding of the meaning of the equal sign develops slowly over the primary grades. In addition to updating their representations of equations to recognize that the equal sign represents an equivalence relation rather than signaling an operation, students need to move beyond full computation to efficiently solve equivalence problems.…

Learning goal orientation is a prominent motivational construct that has been linked to positive student outcomes. For high-ability students, a lack of mastery learning goals has been theoretically and empirically associated with underachievement. However, longitudinal research examining the development and outcomes of their learning goal…