Özet:

This study aims to quantitatively evaluate the contributions of the graphs and graph-related activities in 9th, 10th, 11th, and 12th-grade chemistry textbooks to graph drawing, reading, and interpreting skills. In this study, documental survey analysis was used as the data collection method and assessment categories determining the distribution for units and sections were formed by considering (i) the number of graphs that were presented for instruction, measurement and assessment; (ii) the number of graphs required to be drawn by students in activities of assessment-evaluation, experiments; and (iii) the number of multiple-choice and open-ended questions requiring graph-reading and graph-interpreting in 9th, 10th, 11th, and 12th-grade chemistry textbooks. By the end of the study, it was found that graphs already provided in chemistry textbooks are used mostly for the purpose of instruction rather than assessment and evaluation and that their usage for evaluation and assessment is inadequate. It was also discovered that the number of graphs students are required to draw in assessment and evaluation activities was significantly low and that as the type of questions that require graph-reading and interpreting, open-ended questions were more often given. At the completion of the study, some suggestions were given, regarding the use of graphs in textbooks

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