The aim of this study is to develop conceptual change texts in the teaching of aspects of the nature of science and to introduce the development of texts. The socio-cultural and the subjective aspects were taken into consideration in the conceptual change texts, which are presented in the study. The conceptual change texts were prepared to be used in a 7th grade class in a secondary school during the light unit in a science and technology lesson. The prepared conceptual change texts were piloted in a secondary school in Trabzon in 2008-2009 education year. 22 students participated in pilot study. Some defects were identified and the necessary adjustments were made at the end of pilot. For example, some corrections were made in the section about the reasons of wrong ideas. In the last section of conceptual change texts, coming to a conclusion questions were added to lead the direction to the intended point. It was observed that conceptual change texts were applicable in the class with the unit acquisition. (Contains 1 table.)