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Barbieri, Christina A.; Rodrigues, Jessica; Dyson, Nancy; Jordan, Nancy C. – Grantee Submission, 2019
The effectiveness of an experimental middle school fraction intervention was evaluated. The intervention was centered on the number line and incorporated key principles from the science of learning. Sixth graders (N = 51) who struggled with fraction concepts were randomly assigned at the student level to the experimental intervention (n = 28) or…
Descriptors: Fractions, Mathematics Instruction, Intervention, Mathematical Concepts

Tournaki, Nelly – Journal of Learning Disabilities, 2003
This study compared instruction in addition using either a minimum addend strategy or drill and practice with 84 students either with or without learning disabilities (LD). Students with LD improved significantly only in the strategy condition, whereas general education students improved in both the strategy and the drill-and-practice conditions.…
Descriptors: Drills (Practice), Instructional Effectiveness, Learning Disabilities, Learning Strategies