Erratum to: J Sci Educ Technol

DOI: 10.1007/s10956–016–9636-2

The original version of this article unfortunately contained a mistake.

Acknowledgments should Read:

This material is based upon work supported in part by the National Science Foundation under Grant No. 1,339,181. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

This article was actually intended for the special issue: ITEST. However, inadvertently, it has been published in the regular issue of Volume 25 Issue 5 (October 2016), pp. 782–794.