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ERIC Number: EJ1203634
Record Type: Journal
Publication Date: 2019
Pages: 13
Abstractor: As Provided
ISSN: ISSN-0022-2194
Examining the Impact of Group Size on the Treatment Intensity of a Tier 2 Mathematics Intervention within a Systematic Framework of Replication
Doabler, Christian T.; Clarke, Ben; Kosty, Derek; Kurtz-Nelson, Evangeline; Fien, Hank; Smolkowski, Keith; Baker, Scott K.
Journal of Learning Disabilities, v52 n2 p168-180 Mar-Apr 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 and the quality of explicit instruction served as treatment intensity metrics. A total of 465 kindergarten students with mathematics difficulties from 136 intervention groups participated. Results suggested comparable performances between the 2:1 and 5:1 intervention groups on six outcome measures. Observation data indicated that student practice differed by group size. Students in the 5:1 groups received more opportunities to practice with their peers, while students in the 2:1 groups participated in more frequent and higher quality individualized practice opportunities. Implications in terms of delivering Tier 2 interventions in small-group formats and engaging at-risk learners in meaningful practice opportunities are discussed.
SAGE Publications and Hammill Institute on Disabilities. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Kindergarten; Primary Education; Early Childhood Education; Grade 1; Elementary Education
Audience: N/A
Language: English
Sponsor: Institute of Education Sciences (ED)
Authoring Institution: N/A
Identifiers - Location: Massachusetts (Boston)
Identifiers - Assessments and Surveys: Stanford Early School Achievement Test
IES Funded: Yes
Grant or Contract Numbers: R324A120304