The impulse to investigate the natural world is deeply rooted in our earliest childhood experiences. This notion has long guided researchers to uncover the cognitive mechanisms underlying the development of scientific reasoning in children. Until recently, however, research in cognitive development and education followed largely independent…

This monograph represents 5 years of collaborative discussions among individuals interested in improving the teaching and learning of mathematics beginning in 1985 with the planning of a conference and culminating in the production of this collection of 13 papers to be presented at the conference. Chapters include: (1) an introduction…

The process of conceptual change, in learners and in scientific knowledge, indicates that: (1) change involves complex and varied commitments to methods of investigation, aims and goals of investigation, and prior knowledge; (2) change leads to consensus forming or dissensus forming activities; (3) knowledge claims and procedures for testing…