Fraction Face-Off! shows potentially positive effects on number and operations outcomes, with a WWC-calculated average effect size of 0.89 and improvement index of +31¶
Claim · All claims
Evidence · 1 study · causalr3·q4·i3large
Currency · newest study 2020 · checked against its sources 2026-10-07 (automated, 1 of 1 entry) · not reviewed by a person
Subclaims¶
Reading the evidence codes
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the rigour judged within that kind: what each code means.
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q4 i3 In one RCT meeting WWC standards without reservations, Fraction Face-Off! produced a positive and statistically significant effect on number and operations (average effect size 0.89, improvement index +31, 1,152 students). → numops-1
Evidence¶
numops-1¶
What Works Clearinghouse, Institute of Education Sciences, U.S. Department of Education. (2020, March). Fraction Face-Off!. Retrieved from https://ies.ed.gov/ncee/wwc/InterventionReport/702
q4 · i3 · causal · r3
Findings from the one RCT meeting WWC standards without reservations, on six researcher-designed number and operations measures with 1,152 fourth-grade students. The fraction calculation measure showed an effect size of 1.68 and improvement index of +45, p < .01; the domain average effect size was 0.89.
"Fraction calculation Fourth-grade students 1,152 19.30 (7.08) 8.68 (4.75) 10.62 1.68 +45 < .01"
Discussion¶
Related Claims¶
- Fraction Face-Off! shows potentially positive effects on general mathematics achievement, with a WWC-calculated effect size of 0.64 and improvement index of +24 on NAEP selected items — related
- Fraction Face-Off! shows potentially positive effects on fourth-grade students' geometry and measurement outcomes, with a WWC-calculated average effect size of 0.96 and improvement index of +33 — related
- Fraction Face-Off! improves at-risk fourth graders' fractions performance on a NAEP-derived measure with an average effect size of +0.51 across two studies. — related
- The guide argues that overfocusing on intervention selection alone risks a 'magic bullet' view because average positive outcomes do not guarantee local success — a broader claim this one bears on
- The multi-component measurement-focused fraction intervention outperforms part-whole-focused control on NAEP items, number line estimation, and calculations — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
fraction-face-off-potentially-positive-number-operations |
title |
Fraction Face-Off! shows potentially positive effects on number and operations outcomes, with a WWC-calculated average effect size of 0.89 and improvement index of +31 |
description |
Fraction Face-Off! |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2020 |
source_checked |
2026-10-07 |
generated |
by process:wiki-ingest on 2026-10-07 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — numops-1 |
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