Özet:

Within this study, Critical Thinking Level of Biology Classroom Survey (CTLOBICS) was developed to determine to what extend Biology classroom environment supports Critical Thinking Culture. The survey was developed by following the scale development model by McMillan & Schumacher (2010). The theoretical framework of the study was adapted from Critical Thinking Strategies (Paul et al., 1990). The item pool of the survey was composed of these strategies expressed in sentences and a 59-item- scale was prepared along with the collected expert opinions. The pilot study was conducted with 387 9th, 10th and 11th grade students from two different secondary schools located in Trabzon in Turkey. The survey was finalized after Exploratory and Confirmatory Factor Analyses. The Survey has 32 items and 5 factors (Affective Critical Thinking Skills, General Thinking Skills, Basic Critical Thinking Skills, Associating with Real Life, Reasoning Skills). The inner consistency coefficient α of the scale was calculated as 0,92.

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