References
- Huynh, N., M. Solem, and S. Bednarz. 2015. A road map for learning progressions research in geography. Journal of Geography 114 (2):69–79.
- Larsen, T. B., and J. A. Harrington Jr. 2018. Developing a learning progression for place. Journal of Geography 117(3):100–118.
- National Research Council. 2007. Taking science to school: Learning and teaching science in grades K–8. Washington, D.C.: The National Academies Press.