Concept mapping,vee mapping,and achievement: Results of a field study with black high school students

This article reports on the results of a project that studied the effectiveness of two specific learning heuristics, concept mapping and Vee mapping, in helping black, inner-city, high school students learn biology concepts meaningfully. The project sought to assess the effects on achievement of the use of these two heuristics as part of a carefully designed sequence of instruction. Two instructional treatments were compared, one that utilized the two experimental heuristics as study aids and one that utilized outlining as a comparison study aid. The instructional treatments were administered over approximately a one semester period. Two hundred and fifty subjects, nearly all black, from two urban high schools in Indiana took part in the study. Achievement instruments designed to measure meaningful (higher order) learning were developed. Analysis of variance of the achievement test means failed to reveal statistically significant differences between the experimental and comparison treatment at the 0.05 alpha level. However, there were suggestions of a tendency toward an effect of the experimental treatment, and several factors contributing to the difficulty in distinguishing achievement differences were identified.     

Documenting Science Teachers' Pedagogical Content Knowledge Through PaP-eRs

This paper examines science teachers' pedagogical content knowledge and ways in which that knowledge might be captured, articulated and portrayed to others. The research from which this paper is drawn has involved interviews with experienced science teachers in an attempt to make the tacit nature of their practice explicit. Initially, case methodology was envisaged as being a way of documenting these teachers' pedagogical content knowledge. However, over time, the form of knowledge and information that we were gathering and attempting to portray extended beyond that which could reasonably be described as being case-based. Hence we have developed an approach to articulation and portrayal based on what we call the CoRe (Content Representation) – which represents the particular content/topic of the science teaching – and PaP-eRs (Pedagogical and Professional experience Repertoire) – which help to illuminate specific aspects of the CoRe and therefore offer insights into pedagogical content knowledge itself. The results of this study offer new ways of conceptualising what pedagogical content knowledge is and how it might be captured, documented and disseminated.