Effects of Reference Domain in Children’s Comprehension of Coordinate Graphs
Coordinate graphs provide a visual representation of the relationship between two variables. By examining appropriate visual features of the graph the skilled user can readily extract details of the relationship such as maxima, minima, rates of change. These graphical features are independent of the variables plotted and constitute the elements of the ‘spatial syntax’ of graphical representation. However, in order for the user to understand and interpret any practical graph it is necessary for him to know the names of the variables, their assignment to the coordinates and the nature of the ‘reference domain’ from which they are drawn.
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