This paper explores how the design features of curriculum materials might influence potential opportunities to learn and student outcomes through a comparative, documentary analysis of four mathematics curricula commonly used in the United States.

Discusses the four elements of an experimental design: 1) who participates, 2) experimental treatments, 3) the number of subjects and their allocation, and 4) experiment location and conditions. Also considers difficulties related to random assignment and describes experimental operations.

This newly updated guide provides an easily accessible source of research on the methodological issues associated with surveying persons with disabilities. Mathematica prepared the first version of the guide in 2006. This updated version has 75 new abstracts and reference citations—more...

This report is based on the March Current Population Survey and presents national participation rates for the Food Stamp Program (FSP) for fiscal year 2005. Of the 38 million individuals who were eligible for benefits in an average month in 2005, 25 million participated. The FSP served about 65...

This brief, the last of three case studies examining key operational aspects of coordinated care initiatives in Medicaid, focuses on Rhode Island's Chronic Care Sustainability Initiative. This multi-payer, patient-centered medical home initiative includes the one Medicaid health plan in the...