Claims

The strategy intervention improved third graders' adaptive use of strategies relative to untreated classmates

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i2 medium
Currency · newest study 2018 · not yet checked against its sources · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q3 i2 A repeated measures ANOVA comparing the intervention group with classmates from T1 to T3 yielded a significant time*group interaction with a moderate effect size favoring the intervention group. → Aiso Heinze 2018

Evidence

Aiso Heinze 2018

Aiso Heinze, Julia Arend, Meike Gruessing, Frank Lipowsky. (2018). Instructional approaches to foster third graders' adaptive use of strategies: an experimental study on the effects of two learning environments on multi-digit addition and subtraction. Instr Sci 46:869–891. https://doi.org/10.1007/s11251-018-9457-1

q3 · i2 · causal · r2

Intervention check comparing the 67 intervention children with 179 classmates using repeated measures ANCOVAs at T1 and T3. The printed effect size η2 = .073 is a moderate effect favoring the intervention. A pretest t test against classmates showed no selection bias (adaptive use: d = 0.16, p = .263).

"yielded a significant interaction effect “time*group” with a moderate effect size in favour of the intervention group (F(1, 244) = 19.10, p < .001, η2 = .073). Hence, the intervention had a positive effect on students’ skills in adaptive use of strategies."

Discussion

Learner Variables

Page metadata
Field Value
type claim
id intervention-improved-adaptive-use-versus-classmates
title The strategy intervention improved third graders' adaptive use of strategies relative to untreated classmates
description The strategy intervention improved third graders' adaptive use of strategies relative to untreated classmates
status review
evidence_strength moderate
newest_evidence 2018
generated by process:wiki-ingest on 2026-10-18
trust unverified — no one has confirmed this page's content
sources 1 — aiso-heinze-2018

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