Journal of Research in Science Teaching By Westbrook, Susan; Marek, Edmund “A Cross-Age Study of Student Understanding of the Concept of Diffusion” Publisher: Wiley online library 28/8 Pp. 694-660 1991 A Cross-Age Study of Student Understanding of the Concept of Diffusion Type: Empirical Data collection method: Survey Number of subjects, range: Large — 31 or…Continue Reading A Cross-Age Study of Student Understanding of the Concept of Diffusion