Özet:

An advance organizer is the tool that is presented prior to the material to be learned, and that helps learners to organize and interpret new incoming information. In this study, a concept map concerning the classification of advance organizer was developed. Then, 9thgrade chemistry textbooks written according to both current year 2007 and past year 1996 high school chemistry curriculum were examined by taking into account the concept map prepared. Next, the findings of each textbook analysis were compared. In consequence, while there is only expository advance organizer in the 9th grade chemistry textbooks written according to current curriculum, there exist both expository and comparative advance organizer in the 9th grade chemistry textbooks written according to year 1996 high school chemistry curriculum. It was also determined that the number of advance organizer was increased in current chemistry textbooks. The implications of the findings are discussed and some recommendations for incorporating advance organizers in chemistry classes were noted

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