Inquiry is the guiding philosophy in school science curriculum design in Singapore. Inquiry requires students to be able to use their existing scientific knowledge to formulate hypotheses and critique and evaluate things they observe around them. This process in turn reshapes their existing scientific knowledge so that it becomes more sophisticated. This relationship between inquiring about what they see and applying their existing scientific knowledge is a reciprocal relationship, each informing and influencing the other. In an attempt to hone students’ critical analysis skills through formulating hypotheses in science, students question the scientific possibilities of familiar fairy tales.