Purpose: The purpose of this article is to contribute to the research methodology literature that arose out of the (new) sociology of childhood and the UN Convention of the Rights of the Child (1989) with regard to conducting ethical research with children rather than on children. In particular, this article reflects on the development of a method…

Twenty-four studies were included in this systematic review of vocabulary research literature. The review corroborates the findings of past studies that several strategies have emerged that increase students' vocabulary knowledge. Findings further reinforce the National Reading Panel's recommendations regarding the context and magnitude of studies…

Interactions between conceptual and procedural knowledge influence the development of mathematical competencies. However, after decades of research, these interrelations are still under debate, and empirical results are inconclusive. The authors point out a source of these problems. Different kinds of knowledge and competencies only show up…