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The Effects of Full-Day Prekindergarten: Experimental Evidence of Impacts on Children's School Readiness
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Atteberry, Allison; Bassok, Daphna; Wong, Vivian C. – Educational Evaluation and Policy Analysis, 2019
This study is a randomized control trial of full- versus half-day prekindergarten (pre-K) in a school district near Denver, Colorado. Four-year-old children were randomly assigned an offer of half-day (4 days/week) or full-day (5 days/week) pre-K that increased class time by 600 hours. The full-day pre-K offer produced substantial, positive…
Descriptors: School Schedules, Preschool Education, School Readiness, Program Effectiveness
Racing against the Vocabulary Gap: Matthew Effects in Early Vocabulary Instruction and Intervention
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Coyne, Michael D.; McCoach, D. Betsy; Ware, Sharon; Austin, Christy R.; Loftus-Rattan, Susan M.; Baker, Doris L. – Exceptional Children, 2019
We investigated whether individual differences in overall receptive vocabulary knowledge measured at the beginning of the year moderated the effects of a kindergarten vocabulary intervention that supplemented classroom vocabulary instruction. We also examined whether moderation would offset the benefits of providing Tier-2 vocabulary intervention…
Descriptors: Individual Differences, Vocabulary Development, Receptive Language, Kindergarten
Effects of a Cross-Age Peer Learning Program on the Vocabulary and Comprehension of English Learners and Non-English Learners in Elementary School
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Silverman, Rebecca D.; Martin-Beltran, Melinda; Peercy, Megan M.; Hartranft, Anna M.; McNeish, Daniel M.; Artzi, Lauren; Nunn, Stephanie – Elementary School Journal, 2017
This study evaluated the effects of a cross-age peer learning program targeting vocabulary and comprehension in kindergarten and fourth-grade classrooms with substantial proportions of English Learners (ELs). The study followed a quasi-experimental design with 12 classrooms (6 kindergarten and 6 fourth grade) in the intervention group and 12…
Descriptors: Peer Teaching, Vocabulary Development, Kindergarten, Grade 4
Improving Fraction Understanding in Sixth Graders with Mathematics Difficulties: Effects of a Number Line Approach Combined with Cognitive Learning Strategies
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Barbieri, Christina A.; Rodrigues, Jessica; Dyson, Nancy; Jordan, Nancy C. – Grantee Submission, 2019
The effectiveness of an experimental middle school fraction intervention was evaluated. The intervention was centered on the number line and incorporated key principles from the science of learning. Sixth graders (N = 51) who struggled with fraction concepts were randomly assigned at the student level to the experimental intervention (n = 28) or…
Descriptors: Fractions, Mathematics Instruction, Intervention, Mathematical Concepts
Effectiveness of Supplemental Kindergarten Vocabulary Instruction for English Learners: A Randomized Study of Immediate and Longer-Term Effects of Two Approaches
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Vadasy, Patricia F.; Sanders, Elizabeth A.; Nelson, J. Ron – Grantee Submission, 2015
A two-cohort cluster randomized trial was conducted to estimate effects of small-group supplemental vocabulary instruction for at-risk kindergarten English learners (ELs). "Connections" students received explicit instruction in high-frequency decodable root words, and interactive book reading (IBR) students were taught the same words in…
Descriptors: Kindergarten, Elementary School Students, English Language Learners, Instructional Effectiveness
Reading and Language Outcomes of a Five-Year Randomized Evaluation of Transitional Bilingual Education
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Slavin, Robert E.; Madden, Nancy; Calderon, Margarita; Chamberlain, Anne; Hennessy, Megan – Center for Research and Reform in Education, 2010
This paper reports the fifth-year results of a study comparing the English and Spanish language and reading performance of Spanish-dominant children randomly assigned beginning in kindergarten to Transitional Bilingual Education (TBE) or Structured English Immersion (SEI). This is the first randomized study to compare TBE and SEI reading…
Descriptors: Bilingual Education, Receptive Language, Language Skills, Bilingualism