Swaroop S. Vattam1, Ashok K. Goel1, Spencer Rugaber2, Cindy E. Hmelo-Silver3, Rebecca Jordan4, Steven Gray4, Suparna Sinha3, Understanding Complex Natural Systems by Articulating ...

The purpose of this study was to investigate how children aged five to nine gradually build up an understanding of the characteristics of place-value inherent in the written number system. The task ...