A large number of students demonstrate difficulty acquiring and retaining math facts highlighting the need for early math intervention. This study used a single-case cumulative acquisition design to examine the differential effectiveness and efficiency of three drill interventions, incremental rehearsal (IR), incremental rehearsal with visual…

The current study examined the development of two effects that have been found in single-digit multiplication errors: relatedness and distance. Typically achieving (TA) second, fourth, and sixth graders and adults, and sixth and eighth graders with a mathematics learning disability (MLD) performed a verification task. Relatedness was defined by a…