ABSTRACT:Interest is a powerful motivator; nonetheless, science educators often lack the necessary information to make use of the power of student-specific interests in the reform process of science curricula. This study suggests a novel methodology, which might be helpful in identifying such interests-using children's self-generated questions as an indication of their scientific interests. In this research, children's interests were measured by analyzing 1555 science-related questions submitted to an international Ask-A-Scientist Internet site. The analysis indicated that the popularity of certain topics varies with age and gender. Significant differences were found between children's spontaneous (intrinsically motivated) and school-related (extrinsically motivated) interests. Surprisingly, girls contributed most of the questions to the sample; however, the number of American girls dropped upon entering senior high school. We also found significant differences between girls' and boys' interests, with girls generally preferring biological topics. The two genders kept to their stereotypic fields of interest, in both their school-related and spontaneous questions. Children's science interests, as inferred from questions to Web sites, could ultimately inform classroom science teaching. This methodology extends the context in which children's interests can be investigated. Century, 2000) states that "we are failing to capture the interest of youth for scientific and mathematical ideas." Indeed, many students find standard science curricula largely out of touch with their personal interests, a factor which contributes to the low number of students pursuing advanced science and mathematics courses in high school, and going on to choose scientific careers (Millar & Osborne, 1998). Adolescents' decisions about the contents and directions of their educational training have been found to be influenced to a high degree by the topic-related interests they developed in the preceding years (Krapp, 2000).Organizations, including the National Research Council (1996) and the American Association for the Advancement of Science (1993), have proposed that science curricula taught at a secondary-school level should provide a common basis of knowledge while addressing the particular needs and interests of students. However, educators lack the necessary information and tools to guide modifications that could make use of the power of student-specific interests in improving those students' individualized learning and competency in scientific subjects.The issue of students' interests may also be viewed in the context of the pupil's voice in the education movement (Burke & Grosvenor, 2003;Economic and Social Research Council, 2004;Mirta, 2004;Whitehead & Clough, 2004). Until recently, the pupil's voice had been marginalized or neglected by educational researchers. The student was regarded as an object of study but not as someone who could make an informed judgment on what should be taught in school science courses (Jenkins & Nelson, 20...