In 1993 Carey and Smith conjectured that the most promising way to boost students’ understanding of the nature of science is a “theory-building approach to teaching about inquiry.” The research reported here tested this conjecture by comparing results from two Grade 4 classrooms that differed in their emphasis on and technological support for creating and improving theories. One class followed a Knowledge Building approach and used Knowledge Forum®, which together emphasize theory improvement and sustained creative work with ideas. The other class followed an inquiry approach mediated through collaborative project-based activities. Apart from this, the two classes were demographically similar and both fell within the broad category of constructivist, inquiry-based approaches and employed a range of modes and media for investigative research and reports. An augmented version of Carey and Smith’s Nature of Science Interview showed that the Knowledge Building approach resulted in deeper understanding of the nature of theoretical progress, the connections between theories and facts, and the role of ideas in scientific inquiry.

Knowledge Building provides a model of education for a knowledge age—a model of collective responsibility for idea improvement. This article provides two examples of getting started with the pedagogy and the technology, one from Senior Kindergarten, with students working together to understand why leaves change color in the fall, and the other from Grade 1, featuring explorations of the water cycle. In addition to the classroom work that is reported, commentary on school practices from a Librarian-Technology coordinator and Vice Principal are included to provide a broader school perspective on the work presented in this article.

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