Outside the classroom a hot summer day beckons, but fourth-grade teacher Yeon Eun-jung's students are glued to their tablet PCs as they watch an animated boy and a girl squabble about whether water becomes heavier when frozen.

The small scene in this rural town is part of something big: South Korea is taking a USD 2 billion gamble that its students are ready to ditch paper textbooks in favor of tablet PCs as part of a vast digital scholastic network.

France, Singapore, Japan and others are racing to create classrooms where touch-screens provide instant access to millions of pieces of information. But South Korea, Asia's fourth-largest economy, believes it enjoys an advantage over these countries, with kids who are considered the world's savviest navigators of the digital universe.

A 2009 study by the Organization for Economic Cooperation and Development, a Paris-headquartered grouping of wealthy nations, found 15-year-olds in South Korea scored highest in their ability to absorb information from digital devices, beating runners-up New Zealand and Australia by a large margin.

At Sosu Elementary School in Goesan, principal Jo Yong-deuk speaks of a future in which his students interact in virtual reality with Ludwig van Beethoven and Abraham Lincoln. In the classroom, the children scribble answers in their tablet PCs with touchscreen pens as they watch the video clip explaining the scientific properties of frozen water.