Data collection can be the most time- and cost-intensive part of developmental research. This article describes some long-proposed but little-used research designs that have the potential to maximize data quality (reliability and validity) while minimizing research cost. In "planned missing data designs", missing data are used…

The purpose of this technical report is to summarize the research methodology of the Novice Teacher Study (NTS) strand of the Teacher Quality Partnership (TQP) research. The Ohio TQP embarked on a series of research studies to learn more about the characteristics of effective teachers and to identify the patterns of teacher performance in both…

A recent report by Dr. Randall Ryder evaluated the use of Direct Instruction (DI) reading programs in 2 school districts in Wisconsin. In the report, Ryder claimed that students in 1st, 2nd, and 3rd grade who received Direct Instruction scored significantly lower on several standardized tests of reading than students who received more traditional…

In this article we explore young children's development of mathematical knowledge and reasoning processes as they worked two modelling problems (the "Butter Beans Problem" and the "Airplane Problem"). The problems involve authentic situations that need to be interpreted and described in mathematical ways. Both problems include tables of data,…