This paper describes how one third and final year pre-service (PST) used curriculum materials when planning for primary mathematics teaching on practicum. The findings were drawn from a semi-structured focus group interview, where four PSTs recalled how they planned for primary teaching during a previous practicum. This case study shows how one PST used curriculum planning documents from the practicum setting, and a teacher's guide when planning mathematics lessons. Planning processes are also identified, and implications for associate teachers (ATs), PSTs, and mathematics Initial Teacher Educators are discussed.