Lederman, N.G., & Lederman, J.S. (2004). Revising Instruction to Teach Nature of Science. The Science Teacher, 71:9, p.36-39.
"Although scientific knowledge is empirically based, it nevertheless involves human imagination and creativity." p.37
The case files are the primary source evidence of the imagination and creativity of scientists.
The article offers practical strategies for adapting existing activities to include a focus on NOS.