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Doabler, Christian T.; Clarke, Ben; Kosty, Derek; Kurtz-Nelson, Evangeline; Fien, Hank; Smolkowski, Keith; Baker, Scott K. – Journal of Learning Disabilities, 2019
Group size and treatment intensity are understudied topics in mathematics intervention research. This study examined whether the treatment intensity and overall intervention effects of an empirically validated Tier 2 mathematics intervention varied between intervention groups with 2:1 and 5:1 student-teacher ratios. Student practice opportunities…
Descriptors: Intervention, Program Effectiveness, Mathematics Instruction, Learning Problems
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Doabler, Christian T.; Clarke, Ben; Kosty, Derek B.; Kurtz-Nelson, Evageline; Fien, Hank; Smolkowski, Keith; Baker, Scott K. – Exceptional Children, 2016
The purpose of this closely aligned conceptual replication study was to investigate the efficacy of a Tier 2 kindergarten mathematics intervention. The replication study differed from the initial randomized controlled trial on three important elements: geographical region, timing of the intervention, and instructional context of the…
Descriptors: Mathematics, Mathematics Achievement, Randomized Controlled Trials, Outcome Measures
Doabler, Christian T.; Clarke, Ben; Kosty, Derek B.; Kurtz-Nelson, Evangeline; Fien, Hank; Smolkowski, Keith; Baker, Scott K. – Grantee Submission, 2016
The purpose of this closely aligned conceptual replication study was to investigate the efficacy of a Tier 2 kindergarten mathematics intervention. The replication study differed from the initial randomized controlled trial on three important elements: geographical region, timing of the intervention, and instructional context of the…
Descriptors: Achievement Tests, Control Groups, Experimental Groups, Grade 1