Graham, C. R., Borup, J., Jensen, M., Arnesen, K. T., & Short, C. R. (2022). Appendix B: Research. In M. A. Stevens, M. M. Davis, C. Perrier, J. Borup, K. T. Arnesen, & L. R. Halverson (Eds.), K-12 Blended Teaching: Social Studies Edition. EdTech Books. https://edtechbooks.org/k12blended_socialscience/researchn