Analysis of two internet interactive applets for teaching statistics in schools

Abstract

The aim of this paper is to provide some information to guide the use of Internet interactive resources to teach Statistics in primary and secondary school. We identify key variables, possible cognitive effects and potential semiotic conflicts in two "stat-applets" from the NCTM Standards server. We conclude with some hypotheses about the positive effects of using these resources as computing and display tools, that might favour changes in the types of data analysis tasks, help discussions in the classroom, and amplify conceptual understanding. Even recognising these improvements, we should not forget the statistical objects’ complexity, and the students’ potential symbolic conflicts, which to overcome will require the teacher’s awareness, the planning of appropriate interaction pattern and the improvement of the software.