Pre-K Mathematics with DLM Early Childhood Express Math shows no discernible effects on preschool print knowledge¶

Claim · All claims
Evidence · 1 study · causal r2 · q2 · i0 negligible
Currency · newest study 2013 · 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.

q2 i0 Differences between the intervention group and the comparison group on the TERA-III and WJ-III Letter-Word Identification and Spelling subtests were not statistically significant; the domain average effect size was 0.08. → U.S. Department of Education 2013

Evidence¶

U.S. Department of Education 2013¶

U.S. Department of Education, Institute of Education Sciences, What Works Clearinghouse. (2013). Pre-K Mathematics with DLM Early Childhood Express Math. https://ies.ed.gov/ncee/wwc/InterventionReport/381

q2 · i0 · causal · r2

PCER Consortium (2008) randomized trial, 297 children in 36 schools, assessed print knowledge with the TERA-III (effect size 0.00), WJ-III Letter-Word Identification (0.06), and WJ-III Spelling (0.17), all p > 0.05. Domain average effect size 0.08, improvement index +3, characterized as an indeterminate effect.

"The authors reported that differences between the Pre-K Mathematics with DLM Early Childhood Express Math group and the comparison group were not statisti- cally significant on any of these measures, and the WWC confirmed those calculations."

Discussion¶

Learner Variables¶

Alphabet Knowledge and Print Awareness — outcome: instruction changes it

Page metadata

Field	Value
`type`	`claim`
`id`	`prek-mathematics-no-print-knowledge-effects`
`title`	`Pre-K Mathematics with DLM Early Childhood Express Math shows no discernible effects on preschool print knowledge`
`description`	`Pre-K Mathematics with DLM Early Childhood Express Math shows no discernible effects on preschool print knowledge`
`status`	`review`
`evidence_strength`	`weak`
`newest_evidence`	`2013`
`generated`	by `process:wiki-ingest` on `2026-10-07`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `us-department-of-education-2013`

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