The aim of the present study was to analyze teachers' pedagogical designs, plans of organized technology-supported, collective student inquiry. Ten teachers in Finland designed and implemented eight, inquiry-learning units ("designs") in 12 primary and secondary level classrooms in various subject domains. The guiding principles behind the designs were the objectives of progressive inquiry, such as facilitation of question- and explanation-driven learning, and the use of collaborative technology to support the sharing of knowledge. The participating teachers received substantial pedagogical training on these issues before the classroom implementations. The present study concentrated on examining three aspects in the teachers' pedagogical designs: solutions for supporting students'inquiry efforts, organization of collaboration, and the role given to the web-based Collaborative Learning Environment (CLE). The teachers experienced the use of CLE as a valuable new...