Recent policy documents from the Ontario Ministry of Education called for teachers to present a more authentic view of the nature of scientific practice at all levels of education. Sadly, this call for substantial curriculum change coincided with severe cuts in the education budget. The authors describe how two teachers collaborated with a university-based researcher/teacher educator to design and implement more authentic science in a Grade 7 classroom. The ways in which the teachers changed their views about science and science teaching, the anxieties they experienced, and the institutional constraints that impacted on their practice are discussed, and some more general features of the action research experience are described. (C) 1999 John Wiley & Sons, Inc.