**(Click chart to enlarge)**

Schmidt, William H., Wang, Hsing Chi., McKnight, Curtis C., *J Curriculum Studies*, 2005, volume 37, number 5, pages 525–559

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**(Click chart to enlarge)**

Schmidt, William H., Wang, Hsing Chi., McKnight, Curtis C., *J Curriculum Studies*, 2005, volume 37, number 5, pages 525–559

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