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…

Ninth Grade Academies (NGAs)--also called Freshman Academies--have attracted national attention as a particularly intensive and promising approach for supporting a successful transition for high school freshmen. An NGA is a self-contained learning community for ninth-graders that operates as a school within a school. NGAs have four core structural…

Student teachers (N=21) in elementary classrooms for mildly handicapped learners were randomly assigned to training and supervision in either databased problem-solving instructional approaches or conventional treatments. Teachers in the databased condition had significantly greater effects on reading achievement and off-task behavior control. No…