Kevin Rudd, during the 2007 election campaign, called it the “toolbox of the 21st century” and more than $2.1 billion was spent implementing the Labor government’s Digital Education Revolution. Schools across Australia boast of being at the cutting edge when it comes to the new technologies, and it’s not unusual for laptops to be mandatory and for students to be described as “digital natives” and “knowledge navigators”. But, how effective a…