This paper reports a pilot study to investigate four preservice teachers' reports of their impact on student learning while they completed a four-week professional experience block. We used Hiebert, Morris, Berk, and Jansen's (2007) framework for teacher preparation to analyse the how the participants planned, assessed and reflected on a lesson sequence. Data collected were the preservice teachers' learning diary entries completed during the four-week block and an online questionnaire and interview completed at the end of the teaching block. Results indicate that the pre-service teachers struggled to identify clear learning goals for students which adversely impacted their ability to plan their lessons and assess students' learning. Implications for teacher education programs are discussed.