SBI effects for students with MD-PS hold for ratio and proportion problems at both time points but for percent problems only at immediate posttest¶

Claim · All claims
Evidence · 1 study · q3 peer-reviewed experiment
Currency · newest study 2017 · checked against its sources 2026-11-01 (automated, 1 of 1 entry) · not reviewed by a person

Subclaims¶

q3 i? SBI students outperformed control students on the ratio and proportion subscale at both posttest and delayed posttest (.23 and .30 SDs higher). → Jitendra 2017 q3 i? On the percent subscale, treatment effects were found only at immediate posttest (.32 SDs higher), not at delayed posttest. → Jitendra 2017

q3 i? The SBI group outperformed controls on the Ratio and Proportion subscale at both posttest (.23 SDs) and delayed posttest (.30 SDs). → Jitendra 2017

q3 i? Treatment effects on the Percent subscale were found only at immediate posttest (.32 SDs), not at delayed posttest. → Jitendra 2017

Evidence¶

Jitendra 2017¶

Jitendra, A. K., Harwell, M. R., Dupuis, D. N., & Karl, S. R. (2017). A randomized trial of the effects of schema-based instruction on proportional problem solving for students with mathematics problem-solving difficulties. Journal of Learning Disabilities. https://doi.org/10.1177/0022219416629646

q3 · i?

Subscale analyses of the PPS measure (ratio/proportion and percent subscores analyzed separately via HLM) in the randomized MD-PS sample. The ratio/proportion effect sustained to delayed posttest while the percent effect did not; the delayed percent treatment effect was not significant. No standardized effect size (d or g) was printed for these subscale findings.

"Although the SBI group outperformed the control group on the ratio and proportion subscale at both posttest and delayed posttest (.23 SDs and .30 SDs higher than the control group), we found treatment effects only at immediate posttest (.32 SDs higher than the control group) for the percent subscale."

Discussion¶

Learner Variables¶

• Proportional Reasoning — outcome: instruction changes it

Related Claims¶

• Students with MD-PS and their teachers reported positive perceptions of the SBI intervention's diagrams and problem-solving procedures — related
• SBI did not moderate student growth over time in proportional problem solving for students with MD-PS — related
• Schema-based instruction improves immediate proportional problem-solving performance of seventh graders with mathematics problem-solving difficulties — related
• SBI gains in proportional problem-solving are maintained 9 weeks after the intervention for students with MD-PS — a broader claim this one bears on