This study is an investigation of the impact of collaborative teaching by student-teachers and classroom teachers on children's enjoyment and learning of science. The paper describes findings from a project in which undergraduate science specialist student-teachers were placed in primary schools where they 'co-taught' investigative science and technology with primary teachers. Almost six months after the student placement, a survey of children's attitudes to school science revealed that these children enjoyed science lessons more and showed fewer gender or age differences in their attitudes to science than children who had not been involved in the project. The authors discuss how this model of collaborative planning, teaching and evaluation can both enhance teacher education and improve children's experience of science.