Conceptual Change Text (CCT) is a technique, started with a situation about common misconceptions. Students are asked to predict what will happen at the situation. Then general misconceptions are stated and the wrong parts of these misconceptions are explained. New and scientifically correct knowledge about the topic is presented with examples in the CCT material. At the end the situations are discussed with the students. When in the literature studies were examined it has seen that there weren't any CCT material about fluid pressure. The aim of this study is to develop and introduce a computer supported CCT material to remove the common misconceptions in teaching fluid pressure. (C) 2010 Elsevier Ltd. All rights reserved.