Abstract
This study examines teachers’ philosophies of science and describes how these philosophies influence their classroom instruction. Three science teachers with very diverse views of science were interviewed and observed in their classrooms for several months. These teachers’ philosophies were found to influence laboratory instruction, the manner in which demonstrations were used, the teaching of evolution, science‐technology‐society (STS) instruction, word usage, and instructional goals. The findings are relevant to issues in teacher education as well as the institutional environment of teaching.