This article presents a systematic review of research on the achievement outcomes of all types of approaches to teaching science in elementary schools. Study inclusion criteria included use of randomized or matched control groups, a study duration of at least 4 weeks, and use of achievement measures independent of the experimental treatment. A…

This review synthesizes research on English reading outcomes of all types of programs for Spanish-dominant English language learners (ELLs) in elementary schools. It is divided into two major sections. One focuses on studies of language of instruction and one on reading approaches for ELLs holding constant language of instruction. A total of 13…

This article systematically reviews research on the achievement outcomes of three types of classroom approaches to improving the reading achievement of students in grades 2-5: Reading curricula, computer-assisted instruction (CAI), and instructional process programs. Study inclusion criteria included use of randomized or matched control groups,…