This paper discusses preservice science teachers' conceptualizations o
f learning. The data for this study were obtained from eight Canadian
science graduates enrolled in a teacher education programme. All stude
nts participated in a series of three interviews, consisting of a vari
ety of questions about how learning occurs. The interviews were conduc
ted every four months, beginning at the start of the academic year. Th
e data were analysed using a phenomenographic perspective and the conc
eptualizations are illustrated using excerpts from the interviews. Imp
lications for science teacher education programmes are discussed.