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  5. Research: Bilingual & Dual-Language Education

Research: Bilingual & Dual-Language Education

To see research summaries, citations, and links to full reports, click on the report titles below.

  • Bilingual Effects on Cognitive and Linguistic Development: Role of Language, Cultural Background, and Education
  • Closing the Gap: Addressing the Vocabulary Needs of English-Language Learners in Bilingual and Mainstream Classrooms
  • Dual Language Learners in the Early Years: Getting Ready to Succeed in School
  • Reading and Language Outcomes of a Five-Year Randomized Evaluation of Transitional Bilingual Education
  • Second-Language Acquisition and Bilingualism at an Early Age and the Impact on Early Cognitive Development
  • Successful Bilingual Schools: Six Effective Programs in California
  • Teaching English Language Learners: What the Research Does — and Does Not — Say
  • The Relation Between First- and Second-Language Skills: Evidence from Puerto Rican Elementary School Children in Bilingual Programs

Colorín Colorado is a national multimedia project that offers a wealth of bilingual, research-based information, activities, and advice for educators and families of English language learners (ELLs). Colorín Colorado is an educational service of WETA, the flagship public broadcasting station in the nation's capital, and receives major funding from the American Federation of Teachers and National Education Association. © Copyright 2019 WETA Public Broadcasting.

Artwork by Caldecott Award-winning illustrator David Diaz and Pura Belpr­é Award-winning illustrator Rafael López is used with permission. Homepage illustrations ©2009 by Rafael López originally appeared in "Book Fiesta" by Pat Mora and used with permission from HarperCollins.

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  • ELL Basics
    • Supporting ELLs Through COVID-19
    • New to Teaching ELLs?
    • ELL Glossary
    • Special Populations
    • Resources by Grade
    • Resources by State
    • ELL Policy & Research
    • ELL News Headlines
    • Serving and Supporting Immigrant Students
    • Special Education and ELLs
  • School Support
    • COVID-19 & ELLs
    • ELL School Enrollment
    • ELL Program Planning
    • Assessment
    • Bilingual & Dual-Language Education: Overview
    • Special Education and ELLs
    • School Libraries
    • College Readiness for ELLs
    • Programs for Success
    • ELL Family Outreach
    • Events During the School Year
    • For Administrators
    • For Paraprofessionals
  • Teaching ELLs
    • New to Teaching ELLs?
    • Distance Learning for ELLs
    • Creating a Welcoming Classroom
    • ELL Strategies & Best Practices
    • Language & Vocabulary Instruction
    • Literacy Instruction
    • Content Instruction for ELLs
    • Common Core
    • Special Education and ELLs
    • Technology & ELLs
    • The Role of ESL Teachers
    • Special Populations
  • For Families
    • Help Your Child Learn to Read
    • Learning Together at Home
    • The Preschool Years
    • Schools and Families: An Important Partnership
    • School Success
    • Raising Bilingual Kids
    • Technology at Home
    • Resources for Parents of Teens
    • Visiting the Public Library
    • When Your Children Need Extra Help
  • Books & Authors
    • Books for Young Children
    • Books for Kids
    • Books for Young Adults
    • Books for Professionals
    • Multicultural Literature
    • Pura Belpré: Her Life and Legacy
    • Literacy Calendar
    • Meet the Authors
  • Videos
    • Classroom Videos
    • Webcasts
    • Meet the Authors
    • Meet the Experts
    • PBS Show: Becoming Bilingual
    • Facebook Live Series
  • Audience
    • Teachers
    • Administrators
    • Paraprofessionals
    • Librarians
    • Parents & Families
  • Resource Library
    • Guides & Toolkits
    • Reading Tips for Parents (Multilingual)
    • Reading Tips for Educators
    • Topics A to Z
    • Frequently Asked Questions
    • Research & Reports
    • Web Resources
    • ELL Resources by State
    • Colorín Colorado Blog
    • Responding to a Crisis
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