Claims

GEMS® Space Science Sequence produces a statistically significant positive immediate-posttest effect on the Space Science Content test for grades 4–5 students

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i1 small
Currency · newest study 2012 · 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 i1 In a cluster randomized controlled trial, grades 4–5 students taught with GEMS® Space Science Sequence scored significantly higher on the Space Science Content test immediately after instruction than comparison students (effect size 0.17, improvement index +7). → rct-immediate

Evidence

rct-immediate

U.S. Department of Education, Institute of Education Sciences, What Works Clearinghouse. (2012, June). Science intervention report: Great Explorations in Math and Science® (GEMS®) Space Science Sequence. https://ies.ed.gov/ncee/wwc/InterventionReport/612

q3 · i1 · causal · r2

Cluster randomized controlled trial in central Florida (2007–08 and 2008–09): 66 intervention and 59 comparison teachers; 1,418 GEMS® students versus 1,176 comparison students. The WWC-confirmed domain average effect size was 0.17 with an improvement index of +7 and p-value 0.00, described as "statistically significant positive effects".

"Granger et al. (2010) reported, and the WWC confirmed, statistically significant positive effects of GEMS® Space Science Sequence on the Space Science Content test for students in grades 4 and 5."

Discussion

Page metadata
Field Value
type claim
id gems-space-science-sequence-positive-immediate-posttest-effect
title GEMS® Space Science Sequence produces a statistically significant positive immediate-posttest effect on the Space Science Content test for grades 4–5 students
description GEMS® Space Science Sequence produces a statistically significant positive immediate-posttest effect on the Space Science Content test for grades 4–5 students
status review
evidence_strength moderate
newest_evidence 2012
generated by process:wiki-ingest on 2026-10-07
trust unverified — no one has confirmed this page's content
sources 1 — rct-immediate

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