Age-classes are a salient feature of modern schooling. Yet how did age-grouping come to prevail in entire school systems? And how was this form of grouping related to educational and pedagogic discussions at the time of its emergence? The article addresses these issues by looking at the historical context within which age classes came to a…

This study employed a meta-analytic approach to examine the effectiveness of graphic organizers (GOs) in improving academic and behavioral outcomes for K-12 students with disabilities, drawing from the single-case special education literature. Moderators at participant and study level were analyzed in addition to the main effects. A comprehensive…

This article summarizes the findings of research studies focusing on number sense instruction to improve mathematics competence of school going children. Twenty-three studies were located that met the inclusion criteria. Interventions gleaned from the review were categorized based on type of instruction (i.e., constructivist, explicit or a…