Strategy use indicative of an understanding of units of length (Cullen, Barrett)

Cullen, C. J., & Barrett, J. E., (2010) Strategy use indicative of an understanding of units of length. In M. Pinto & T. Kawasaki (Eds.), Proceedings of the 34th Annual Conference of the International Group for the Psychology of Mathematics Education (Vol. 2, pp. 281-288. Belo Horizonte, Brazil: International Group for the Psychology of Mathematics Education.