An important aim of education is that students learn to think critically about moral values. This study examines how five secondary school philosophy teachers implement and evaluate design principles for promoting value-loaded critical thinking in whole-class dialogues. The five design principles are: address, apply and reason critically about moral values, create intercontextuality, and promote metacognitive reflection. For our evaluation, we first analyzed teachers’ judgments of the relevance, consistency, and practicality of the design principles. Secondly, we conducted classroom observations to analyse teachers’ implementation of the design principles. We find that teachers consider the design principles relevant, consistent and mostly practical and that they use a wider range of teaching strategies for each design principle, after participating in this study.

教育的一个重要目的是让学生学会对道德价值观进行批判性思考。这项研究研究了五位中学哲学老师如何实施和评估设计原则，以促进价值取向的批判性思维在全班对话中。五项设计原则是：处理，应用和批判道德价值观，创造相互关系，促进元认知反射。为了进行评估，我们首先分析了教师对设计原则的相关性，一致性和实用性的判断。其次，我们进行了课堂观察，以分析教师对设计原则的实施情况。我们发现，参加本研究后，教师认为设计原则相关，一致且大多是实用的，并且他们针对每种设计原则使用更广泛的教学策略。