Another widely acclaimed research programme (Dwyer et al, 1991; Sandholtz et al, 1997) focused on technology-rich, nationwide Apple Classrooms of Tomorrow (ACOT) supplied with ‘computers, printers, scanners, laser disc, and videotape players, modems, CD-ROM drives and hundreds of software titles’ (Dwyer et al, 1991). Intervention aimed at helping teachers learn to teach in a technology-rich context, supported by researchers and ACOT staff who managed software and hardware training, planning and sharing time, and offered peer observations. This longitudinal research program identified an instructional evolution through which teachers progressed during their (usually 5-year) technology learning process. They moved through the Entry phase, where instruction remained primarily unchanged and teachers grappled with technical problems. During