@article{Wynn_2015, title={A Cognitive Rationale for a Problem-Based US History Survey}, volume={40}, url={https://openjournals.bsu.edu/teachinghistory/article/view/689}, DOI={10.33043/TH.40.1.28-42}, number={1}, journal={Teaching History: A Journal of Methods}, author={Wynn, Charles T.}, year={2015}, month={May}, pages={28–42} }