The document discusses the evolution and development of interactive whiteboards from their origins to their current widespread use in classrooms. It describes how interactive whiteboards were initially developed in the late 1990s to enhance classroom instruction with digital tools. The document then outlines Rogers' five stages of the diffusion of innovations model and applies it to the adoption of interactive whiteboards over time, from the early innovators and adopters to the late majority and laggards. Finally, it discusses strategies for persuading different types of teachers and achieving critical mass in adopting the new technology.