# data[].attributes.headline
What Works Clearinghouse - Evidence Snapshot

# data[].attributes.subject
What Works Clearinghouse - Evidence Snapshot

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Houghton Mifflin Mathematics is a core mathematics curriculum for students at all ability levels in kindergarten through grade 6. At each grade level, the program focuses on basic skills development, problem solving, and vocabulary expansion to help students master key math concepts.

# data[].attributes.headline
What Works Clearinghouse - Evidence Snapshot

# data[].attributes.subject
What Works Clearinghouse - Evidence Snapshot

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As an initiative of the U.S. Department of Education's Institute of Education Sciences (IES), the What Works Clearinghouse (WWC) was created in 2002 to be a central and trusted source of scientific evidence for what works in education.

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educational improvement; excellence in education; educational research; national center for education research; national center for education evaluation and regional assistance; after two years

# data[].attributes.attachment_link.keywords[]
three elementary math curricula outperform a fourth

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After Two Years, Three Elementary Math Curricula Outperform a Fourth

# data[].attributes.attachment_link.description
After Two Years, Three Elementary Math Curricula Outperform a Fourth

# data[].attributes.attachment_link.keywords[]
educational improvement; excellence in education; educational research; national center for education research; national center for education evaluation and regional assistance; after two years

# data[].attributes.attachment_link.keywords[]
three elementary math curricula outperform a fourth

# data[].attributes.attachment_link.title
After Two Years, Three Elementary Math Curricula Outperform a Fourth

# data[].attributes.attachment_link.description
After Two Years, Three Elementary Math Curricula Outperform a Fourth

# data[].attributes.headline
What Works Clearinghouse - Evidence Snapshot

# data[].attributes.subject
What Works Clearinghouse - Evidence Snapshot

# data[].attributes.attachment_link.description
As an initiative of the U.S. Department of Education's Institute of Education Sciences (IES), the What Works Clearinghouse (WWC) was created in 2002 to be a central and trusted source of scientific evidence for what works in education.

# data[].attributes.attachment_link.description
Drive real, measurable results with Math Expressions. Review the research behind HMH's Grades Pre-K-6 Math Core program.

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Drive real, measurable results with Saxon Math. Review the research behind HMH's Grades K-12 Math Core program.

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Drive real, measurable results with GO Math!®. Review the research behind HMH's Grades K-8 Math Core program.