Another brand new study by the United States Federal Government that ranks Investigations in last place after studying which math curriculum is most effective. Any big surprise? Of course not.
The Ed Week Article on the findings: SaxonExpressionsmath.pdf
Achievement Effects of Four Early Elementary School Math Curricula: Findings from First Graders in 39 Schools Achievement Effects of Four Early Elementary School Math Curricula:
Findings from First Graders in 39 Schools reports on the relative impacts of four math curricula on first-grade mathematics achievement. The curricula were selected to represent diverse approaches to teaching elementary school math in the United States.
The four curricula are Investigations in Number, Data, and Space; Math Expressions; Saxon Math; and Scott Foresman-Addison Wesley Mathematics. First-grade math achievement was significantly higher in schools randomly assigned to Math Expressions or Saxon Math than in those schools assigned to Investigations in Number, Data, and Space or to Scott Foresman-Addison Wesley Mathematics. This study is being conducted as part of the National Assessment of Title I. The report cleared IES peer review on February 2, 2009.