John Wagster Henry Kwong Gautam Biswas Daniel Schwartz Bringing CBLEs into Classrooms: Experiences with the Betty's Brain System. 252-256 2008 ICALT http://dx.doi.org/10.1109/ICALT.2008.211 conf/icalt/2008 db/conf/icalt/icalt2008.html#WagsterKBS08