J. J. Kaput’s scientific contributions

... The process of operating in one representation and providing an answer in another representation has been noted in explaining a disconnect between the understanding of equations and their application in a graphical context (Leinhardt, Zaslavsky, & Stein, 1990;Schoenfeld, Smith, & Arcavi, 1993). Examples of this difficulty include not being able to determine the y-intercept from a given graph, the valence of coordinates from a given point on a graph, or the valence of the slope of a given line on a graph (e.g., Kaput, 2018;Moschkovich, Schoenfeld, & Arcavi, 2012). Additionally, according to Janvier (1987), the processes of moving between the different representations are not of equal difficulty. ...

Reference:

Understanding error patterns in students' solutions to linear function problems to design learning interventions