The PS-I intervention significantly increased the percentage of students passing the linear algebra final exam in all four cohorts (Cohen's d = 0.21–0.42)¶
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Evidence · 1 study · designr3·q3·i1small
Currency · newest study 2025 · not yet checked against its sources · not reviewed by a person
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q3 i1 The percentage of passing grades differed significantly from baseline in every intervention year, with Cohen's d between 0.21 and 0.42. → Baumgartner 2025
Evidence¶
Baumgartner 2025¶
Baumgartner, V., Daguati, S., Trninic, D., Akveld, M., Caspar, A., Hungerbühler, N., Kapur, M. (2025). Problem-solving before instruction for learning linear algebra in university mathematics. Instructional Science. https://doi.org/10.1007/s11251-025-09709-8
q3 · i1 · design · r3
ANOVA on the percentage of passing grades across baseline and intervention cohorts (overall F(4) = 27.32, p < 0.001, η² = 0.03). Pass rates rose from 55.84% at baseline to 65.66–75.81% in the intervention cohorts (Table 3); e.g. Year 2 contrast d = 0.42, Year 3 d = 0.21.
"Planned contrasts using Tukey's method between the separate intervention years and the baseline revealed that the exam performance in each year of the intervention differed significantly from the baseline, all p ≤ 0.001, with effect sizes of Cohen's d between 0.21 and 0.42."
Discussion¶
Related Claims¶
- During the intervention, linear algebra exam performance rose distinctly above overall first-year performance, a pattern the authors interpret as intervention impact beyond cohort differences — related
- PS-I over a year in a university linear algebra course was followed by significantly higher final exam performance versus baseline cohorts — possibly the same claim (merge candidate)
- Students' participation in preparatory exercises positively predicted their final exam grade in every intervention year (β = 0.16–0.31; R² = 0.03–0.16) — related
- Participation in preparatory exercises predicted conceptual-understanding test performance in the first two iterations only, with no evidence in Years 3 and 4 — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
ps-i-preparatory-exercises-increase-pass-rates-linear-algebra |
title |
The PS-I intervention significantly increased the percentage of students passing the linear algebra final exam in all four cohorts (Cohen's d = 0.21–0.42) |
description |
The PS-I intervention significantly increased the percentage of students passing the linear algebra final exam in all four cohorts (Cohen's d = 0.21–0.42) |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2025 |
generated |
by process:wiki-ingest on 2026-10-18 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — baumgartner-2025 |
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