@conference {764,
	title = {Development of a Flexible Understanding of Place Value},
	year = {2014},
	publisher = {A Mathematics Education Perspective on early Mathematics Learning between the Poles of Instruction and Construction (POEM)},
	organization = {A Mathematics Education Perspective on early Mathematics Learning between the Poles of Instruction and Construction (POEM)},
	address = {Malm{\"o}, Schweden},
	url = {http://www.mah.se/upload/FAKULTETER/LS/LS-seminarier/POEM/Ladel_Kortenkamp\%20-\%20Development\%20of\%20a\%20flexible\%20understanding\%20of\%20place\%20value.pdf},
	author = {Ladel, Silke and Kortenkamp, Ulrich}
}
