Warm,sunny days

Each change in the seasons brings a certain sense of excitement. Perhaps, after a long, cold winter, the most pleasant change of all is when the signs of Spring begin to appear: warm, windy weather; tiny shoots of green peeking through the melting snow; budding trees and bushes; the first robin; rainstorms and puddles; and a chance to go outside to fly a kite or throw a paper glider into the air.... Then, finally,warm, sunny days to let us know that Spring is really here!     

Statistics in High School Science

Exploratory date analysis provides powerful numerical and graphical tools with which to summarise and interpret data. In this article the authors describe their work with students who were given the opportunity to engage in the solution of a real problem in the physics laboratory which requried statistical techniques.     

The mathematical discourse of 13-year-old partnered problem solving and its relation to the mathematics that emerges

This paper, written within a discursive perspective, explores the co-shaping of public and private discourse, and some of the circumstances under which one occasions the other, in the evolution of mathematical thinking by pairs of 13-year-olds. The discourse of six pairs of students, engaged in interpreting and graphing problem situations involving rational functions, was analyzed by means of recently developed methodological tools. The nature of the mathematics that emerged for each pair was found to be related to several factors that included the characteristics of the interpersonal object-level utterances both before and after the solution path had been generated, the degree of activity of the personal channels of the interlocutors, and the extent to which the thoughts of participants were made explicit in the public discourse. The analysis of the discursive interactions provided evidence that adolescents within novel problem situations can experience some difficulty in making their emergent thinking available to their partners in such a way that the interaction be highly mathematically productive for both of them. This revised version was published online in July 2006 with corrections to the Cover Date.     

A study of the relationship between the Stroop effect and reading age in dyslexic subjects

40 dyslexic subjects were given a version of the Stroop test and the magnitude of interference was plotted as a function of reading age as measured by the British Ability Scale. A negative linear relationship emerged, such that greater reading proficiency was associated with less interference. This result is discussed in the context of LaBerge and Samuel's theory of automatic information processing in reading.