In higher education, the number of computer projectors in classrooms has doubled every year for the past five years. A similar trend in K?12 education is occurring now that capable classroom projectors have become available for less than $1,000. At the same time, large-screen displays are becoming common in society; a trend being acceleration by a transition to high definition television and rapid progress in the evolution of display technologies. This article discusses the growing trend of using computer projectors and large-screen displays in the classroom, and the need for a compatible educational application software to match it for whole classroom use.