Many preservice teachers struggle in science courses and foster anxieties regarding science instruction in their future classrooms. Providing time and support for preservice teachers to teach science in an after-school classroom through service learning allows them to build a science learning environment outside the formal school day. In this alternative learning space, student dialogue can enhance learning in science while also improving preservice teachers’ confidence and enthusiasm to teach science. SCI-TALKS, a program that integrates service learning and science methods instruction