Perhaps the clearest definition of thinking in a field of study as the preferable educational approach is to recall Hazlitt's essay "On the Ignorance of the Learned" where he says, "If we wish to know the force of human genius we should read Shakespeare. If we wish to see the insignificance of human learning, we may study his commentators." Strong words, but they bring out the point. If not, think in terms of pure text-book learning.
Proceedings of the Iowa Academy of Science
©1942 Iowa Academy of Science, Inc.
Lindstrom, E. W.
"Teaching to Think in a Field Rather Than about It,"
Proceedings of the Iowa Academy of Science, 49(1), 461-465.
Available at: https://scholarworks.uni.edu/pias/vol49/iss1/94