Genetics is a core topic in the biology curriculum of many countries. Learning genetics is difficult for multiple reasons, including the need to reason about complex mechanisms--and to link mechanisms--that occur at different time and space scales. Previous research in genetics education explores students' understandings of inheritance patterns or…

In a cluster-randomized study, we investigate the impact of an argument-based approach to teaching science in elementary school on science learning and critical thinking skills. Forty-eight schools participated in the study, with data on 9,963 students across the 2 years of the intervention. Annual standardized tests assessing science content…

This article addresses the problem of treating generalizations of human activity as entities and structures that ultimately explain the activities from which they were initially drawn. This is problematic because it involves a circular reasoning leading to unwarranted claims explaining the originally studied activities of science teaching and…

The present essay examines the emerging issue of domain-general versus domain-specific nature of science (NOS) understandings from a perspective that illuminates the value of domain-specific philosophies of science for the growth and development of the NOS educational field. Under the assumption that individual sciences do have their own…

The characterization of students' cognitive biases is of central importance in the development of curriculum and teaching strategies that better support student learning in science. In particular, the identification of shortcut reasoning procedures (heuristics) used by students to reduce cognitive load can help us devise strategies to foster the…

Reports on a study designed to: (a) understand the nature of science as progressive transitions in heuristic principles; and (b) provide a rationale for the inclusion of three more characteristics of the nature of science to the original five suggested by Smith and Scharmann. Concludes that nature of science manifests in different topics of the…

Responds to "Understanding Nature of Science as Progressive Transitions in Heuristic Principles" by Mansoor Niaz. Concludes that the historical vignettes provided by Niaz provide interesting insights into the nature of science but that the proposed characterizations do not help distinguish things that are more scientific from things that are less…

Many researchers and teacher educators propose that reflection is an important way teachers can think about changing their views and practices. The hierarchical constructs used to describe reflection, however, are often interpreted in ways that promote reflection as a "tool" teachers use to elevate their views and practices toward ideal "end…

Analyzes difficulties of students experiencing their first contact with heuristic hypotheses. Attempts to interpret these difficulties and suggest remediations. Uses an example from the chemistry of aqueous solutions. (MKR)

Examines various types of problems that researchers have used to demonstrate problem solving. Focuses on genetics problems. Discusses classes of learning outcomes, conceptual knowledge gains, content-independent heuristics, content-specific procedures, understanding the nature of science and a typology of genetics problems. (CW)

This article discusses problem solving and how science educators can integrate problem solving into their instruction. The Search, Solve, Create, and Share (SSCS) model was developed based on the findings of problem solving research. (YP)

Examines how problem solving in the domain of Mendelian genetics proceeds in situations where solvers' mental models are insufficient to solve problems at hand (model-revising problem solving). The study addressed the heuristics characteristic of successful model-revising problem solving and other aspects of student model use. (LZ)

Posner's theory of conceptual change forms the background for this study which focuses upon conceptual ecology, specifically upon the heuristics children appear to employ in sense-making. The study focuses upon two children who demonstrate remarkably different sense-making heuristics; a recognizably scientific one and one that involves the…

Advocates removing the taboo regarding anthropomorphism and teleology in biology education. Argues that for high school students, accepting such formulations does not necessarily imply anthropomorphic or teleological reasoning. Further, living organisms seem goal-oriented because of their adaptation for survival. Concludes with the argument that…

This paper reports the results of applying a particular analytical perspective to data from an interview study: a typology of learning impediments informed by research into learning and students' ideas in science. This typology is a heuristic tool that may help diagnose the origins of students' learning difficulties. Here it is applied to data…