Constructing and Collaborating through ICT

In this paper, I will describe research over several decades that has aimed to enhance mathematics learning and engagement through construction and collaboration making innovative use of digital technology. I will dwell in some detail on my most recent and ongoing project that is designing and building a computational system to support teachers in helping students to make the step to algebraic generalisation, with functionalities that encourage students to share and reflect upon their own constructions and rules as well as those of others.