Methods for meta-analysis have evolved dramatically since Gene Glass first proposed the term in 1976. Since that time statistical and nonstatistical aspects of methodology for meta-analysis have been developing at a steady pace. This guide is an attempt to provide a practical introduction to rigorous procedures in the meta-analysis of social…

The Board of School Commissioners appointed to inquire into the system of instruction in the public schools of Baltimore. This bulletin presents the outcome of such inquiry. It is mainly concerned with a comparison of the Baltimore system of education with the systems found in others of the greater American cities. It will accordingly be of…

This publication contains the three numeracy units of the three levels of Support Materials for Agricultural Training (SMAT) in the area of occupational health and safety: Level 1 (starting), 2 (continuing), and 3 (completing). The units are designed to help the learner improve his or her numeracy skills needed to deal with occupational safety and…