@conference {137216,
	title = {Learning from comparison in algebra},
	booktitle = {European Association of Research on Learning and Instruction Biennial Conference},
	year = {2013},
	note = {Request a copy of this paper},
	month = {2013, August},
	publisher = {EARLI},
	organization = {EARLI},
	address = {Munich, Germany},
	author = {Star, J. R. and Pollack, C. and Durkin, K. and Rittle-Johnson, B. and Lynch, K. and Newton, K.J. and Gogolen, C.}
}
