Interactive Virtual Math (IVM) is a visualization tool to support secondary school students’ learning of graphs by dynamic events. In the prototype version students construct a graph and try to improve it themselves and with the feedback of the tool. In a small-scale experiment, which involved four classes …

Interactive Virtual Math (IVM) is a visualization tool to support secondary school students’ learning of dynamic functions situations graphs. The logbook-function allows teachers to get continuous and real-time assessment on classroom progress and of individual students’ learning process. In a teaching …

An essential condition to use mathematics to solve problems is the ability to recognize, imagine and represent relations between quantities. In particular, covariational reasoning has been shown to be very challenging for students at all levels. The aim of the project Interactive Virtual Math (IVM) is …

Eighteen years after the introduction of the graphing calculator in national examinations in the Netherlands, much has been learned about the use of technology in education. One of the key lessons was that integrating ICT as a tool for learning math is a complex task, and this complexity is often underestimated. …

This article explores ways to assess interactional performance, and reports on the use of a test format that standardizes the interlocutor’s linguistic and interactional contributions to the exchange. It describes the construction and administration of six scripted speech tasks (instruction-, advice-, …