A look at the math behind yesterday’s iBooks announcement.

By John Patrick Pullen, contributor

FORTUNE — At yesterday’s Apple event in New York City’s Guggenheim Museum, senior vice president of worldwide marketing Phil Schiller was quick to point out how education has been at the core of the company since the beginning. But announcing a revamped iBooks program (as well as the launch of the iBooks Author and iTunes U apps) will do more than just affect how students learn arithmetic. It has the potential to change the math for all of educational publishing….